{"title":"Dan D’Agostino: High-End Amplifiers and Preamplifiers","description":"\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003c!--block--\u003eDan D'Agostino Master Audio Systems is a high-end audio equipment manufacturer based in the United States. The company was founded by Dan D'Agostino, a legendary audio designer who has been in the industry for over 30 years. \u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eKnown for their exquisite craftsmanship, attention to detail, and uncompromising sound quality, Dan D'Agostino's amplifiers, preamplifiers, and integrated amplifiers are considered to be some of the best in the world. Their products are designed to deliver the most realistic, detailed, and dynamic sound possible, making them a favorite among audiophiles and music lovers alike. \u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eAesthetically, Dan draws inspiration from Swiss watchmakers, modeling his amplifier meters off of Breguet and Tourbillon watch faces. The end result of his painstaking attention to detail is a range of products that is as visually stunning as it is aurally impeccable. With a focus on quality, performance, and innovation, Dan D'Agostino Master Audio Systems continues to push the boundaries of what is possible in high-end audio.\u003c\/div\u003e\n\u003cbr\u003e\n\n\u003cdiv class=\"hypervisual_search_summary\" style=\"display: none;\"\u003e \u003c\/div\u003e","products":[{"product_id":"dan-dagostino-momentum-amplifier-stand","title":"Dan D'Agostino Momentum Stand","description":"The Momentum Amplifier Stand is designed specifically for use with the Momentum Monoblock and Momentum Stereo amplifiers. \u003c!-- TABS --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eThis stand elevates the amplifiers above rugs and carpeting, assuring proper ventilation. By elevating the amplifier a few inches above the surface below, the stand helps keep dust and debris away from the amplifier’s vents. The conical, solid aluminum feet help isolate the amplifier from vibration coming through the floor, so its circuits will be unaffected by these vibrations.\u003cbr\u003e\u003cbr\u003e Available in Silver or Black\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cp\u003eDimensions: 3\/4 x 10 3\/8 x 16 1\/8 in. (hwd)\u003c\/p\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Default Title","offer_id":31467925438527,"sku":"MOMENTUMFLRSTD","price":2500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/files\/dag_stand_1000x1000_dd39f7f8-f51e-4bee-9032-8024aaffde46.jpg?v=1684594770"},{"product_id":"dan-dagostino-momentum-monoblock-amplifier","title":"Dan D'Agostino Momentum M400 MxV Monoblock Amplifier","description":"The original Momentum Mono Amplifier was the first product designed and manufactured by the company and the latest version, the Momentum M400 MxV Mono amplifier elevates this iconic design to its greatest height. The Momentum M400 MxV models feature techniques and topologies initially developed and implemented in the Relentless Mono Amplifier. This fullest expression of the Momentum circuitry is reflected in the new model name, MxV. Those with a physics background will recognize that MxV or Mass times Velocity is the equation for Momentum. \n\n\u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eEvery major section of the amplifier - power supply, input, driver, and output stages - have all been enhanced in this advancement. A new transformer winding pattern provides over 50% more current output from the same transformer footprint. This additional current offers greater headroom during dynamic passages. A reinvisioned input stage combines a brand new circuit topology with advanced components feeding the driver and output stages. Crucial to the new circuit are the bipolar transistors powering the front end of the amplifier. In the Momentum M400 MxV amplifiers, new devices deliver ten times the current and power of the original devices. These wider bandwidth, higher power components extend low and high frequency performance with reduced distortion in both frequency extremes. Energizing the driver stage is a new bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. However, there is a limit to bias level in any amplifier. With this new circuit topology and our unique Copper heatsinks, thermal issues are not a practical concern in the Momentum M400 MxV amplifiers. The new bias scheme ensures bias consistency, preventing excessive temperatures even under the greatest demand. Additional power transistors in the output stage reduce workload for each device. By minimizing stress on each individual device, the entire output section works more efficiently. The result is a richer, more dynamic, intimate presentation regardless of musical genre.\u003cbr\u003e\u003cbr\u003e\n\nThe final output stage features new output transistors that were originally sourced for the flagship Relentless Monoblock Amplifier. The high-output transistors used on the Momentum M400 MxV are among the fastest available. Using 26 on the Momentum M400 MxV amplifiers they run at a blistering 69 MHz, permitting the Momentum M400 MxV to achieve incredible bandwidth. Each transistor mounts with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heat sinks. A capacitor\/resistor network connected to the base of each transistor ensures stability even at high frequencies and with low-impedance speakers. Additionally, every output transistor is measured and only devices that match the required performance specifications are included in the production of Momentum M400 MxV amplifiers. As with all D'Agostino models, the Momentum M400 MxV amplifiers feature discrete, direct-coupled balanced circuitry, the most accurate circuit platform possible.\u003cbr\u003e\u003cbr\u003e\n\n \nPower to spare\u003cbr\u003e\n\nDefying its compact size, the Momentum M400 MxV is a powerhouse amplifier. The backbone is the new ultra-quiet 1,800VA linear transformer with almost 50% greater current output. This engine drives a nearly 100,000ⲙF capacitor bank resulting in 400\/800\/1,600W of power output into 8\/4\/2Ω speaker loads for the Momentum M400 MxV The Momentum M400 MxV amplifiers are capable of driving any loudspeaker to its fullest potential.\u003cbr\u003e\u003cbr\u003e \n\n \n\nInnovative Cooling with Venturi Style Heatsinks\u003cbr\u003e\n\nA critical element of any amplifier output stage is circuitry known as the driver section. In the new Momentum M400 MxV, this stage is a fully complementary design. Individual transistors are employed for the positive and negative halves of the musical signal. This nearly doubles the current drive necessary to maximize the enhanced output stage that follows. The new output stage takes this increased drive to boost the open loop gain by the same factor of two. The result is a sound that is more authoritative, richer, and more expansive.\u003cbr\u003e\u003cbr\u003e \n\nHand-built and individually tested.\u003cbr\u003e\n\nEach Momentum M400 MxV monoblock amplifier is hand-built and individually tested in D'Agostino's Arizona factory by our team of technicians and craftsmen.\u003cbr\u003e\u003cbr\u003e  \n\nUpgrading to the MxV performance\u003cbr\u003e\n\nThe new Momentum M400 MxV employs the same chassis as previous Momentum amplifiers. All generations of Momentum Mono amplifiers can be upgraded to the Momentum M400 MxV performance level. All electrical enhancements are included in the upgrade while the original metalwork is retained. Original Momentum amplifiers receive a new 400 Watt meter plate reflecting the power output increase included in the upgrade. Momentum M400 units already have this power increase and meter. \u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency Response: 1 Hz to 200 kHz, -1 dB 20Hz to 20 kHz, ±0.1 dB\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio: 115 dB, unweighted\u003c\/li\u003e\n\u003cli\u003eFinish: Silver, Black, Custom Finishes Available Upon Request\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 1 MΩ\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 0.11Ω\u003c\/li\u003e\n\u003cli\u003ePower: 400 watts @ 8Ω 800 watts @ 4Ω 1,600 watts @ 2Ω\u003c\/li\u003e\n\u003cli\u003eDistortion: 400 watts @ 8Ω 0.09% @ 1 kHz\u003c\/li\u003e\n\u003cli\u003eInputs: 1 balanced XLR\u003c\/li\u003e\n\u003cli\u003eDimensions: 12.5 x 21.5 x 5.25 inches \/ 31.75 x 54.61 x 13.34 cm.\u003c\/li\u003e\n\u003cli\u003eWeight 95 lbs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- \/TABS --\u003e\n","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Default Title","offer_id":31467926323263,"sku":"","price":90000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/products\/dag_m400_mxv_1000x1000_40e8c92c-3770-4d2e-80be-0e3d897287a4.jpg?v=1669839018"},{"product_id":"dan-dagostino-progression-mono","title":"Dan D'Agostino Progression M550 Mono Amplifier","description":"There is no mistaking the D’Agostino family styling of the second generation Progression M550 Mono Amplifier. Immediately grabbing one’s attention is the new heat sink design. Drawn directly from the flagship Relentless Mono Amplifier, each heatsink is milled from a single, 48.5-pound (22-kilogram) aluminum billet slab. This highly efficient elliptical form dramatically improves the cooling ability of the design and assures that the Progression M550 Mono Amplifier runs safely and reliably even when delivering its full-rated power. Reflected in the model name, the Progression M550 Mono Amplifier delivers 550\/1,100\/2,220 watts into 8\/4\/2 ohms. \u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eThere is no mistaking the D’Agostino family styling of the second generation Progression M550 Mono Amplifier. Immediately grabbing one’s attention is the new heat sink design. Drawn directly from the flagship Relentless Mono Amplifier, each heatsink is milled from a single, 48.5-pound (22-kilogram) aluminum billet slab. This highly efficient elliptical form dramatically improves the cooling ability of the design and assures that the Progression M550 Mono Amplifier runs safely and reliably even when delivering its full-rated power. Reflected in the model name, the Progression M550 Mono Amplifier delivers 550\/1,100\/2,220 watts into 8\/4\/2 ohms. \u003cbr\u003e\u003cbr\u003e The Progression M550 includes major revisions to the input topology. Distortion, signal\/noise ratio, channel separation, and bandwidth measurements have all improved. New transistors handle six times the power of the previous components and a new DC coupling circuity has improved low frequency performance and extended the bandwidth of the amplifiers. Pairing this advanced front end to the enhanced output stage has improved the dynamic impact, detail retrieval, and spatial integrity of the amplifier’s playback. The audio signal path throughout is discrete, balanced, and direct coupled. Advanced protection techniques shield the amplifier and associated components from any unexpected anomaly.\u003c\/p\u003e\n\u003ch5\u003eFEATURES\u003c\/h5\u003e\n\u003cp\u003eExploring New Dimensions\u003cbr\u003e\u003cbr\u003e A new power device provides the foundation for an upgraded output stage. This new transistor, first used in the Relentless Mono Amplifier, extends high frequency response, increases power handling by a factor of four and features tighter tolerance gain matching between complementary NPN\/PNP pairs. A wider safe operating area and superior gain linearity provides greater thermal stability throughout the amplifiers’ power delivery. Coupling the new output device to the high efficiency heat sink design affords an increase in operating bias. The higher bias specification has increased the Class A operating range of the Progression M550 to 70 watts. The result is improved instrument timbre and tonal reproduction for a great percentage of listening. \u003cbr\u003e\u003cbr\u003e Maintained from the original amplifier is the Super Rail topology, a simple concept but complex in execution. Every amplifier employs a voltage rail, actually two, a positive one and its companion negative partner. Voltage rails support the delivery of power to the speaker. The music signal swings between these two rails but due to natural loss, the musical signal never reaches the output rails’ full capability. A Super Rail overcomes this limitation. Borrowing the idea of a turbo in a car engine, the Super Rail employs higher voltage rails in the sections prior to the output stage. This voltage \"boost\" allows the musical signal to exploit the full capability of the output voltage rails. Extending the musical signal swing closer to the output rails maximizes the performance of the output circuitry design itself. Nearly ideal output stage operation results with improved dynamics, lower distortion, and a fierce grip of the speaker. The output topology employs 48 power transistors anchored by a 2,000 VA power supply transformer and nearly 100,000 microfarads of power supply storage capacitance. \u003cbr\u003e\u003cbr\u003e Legendary Purity\u003cbr\u003e\u003cbr\u003e The anodized Aluminum faceplate includes the iconic look of the company’s power meters. The Progression M550 Mono Amplifier 180° meter needle is driven by a high-speed ballistic circuit improving the meter’s responsiveness. The Progression M550 Mono Amplifier features a 180° needle arc meter design driven by a high-speed ballistic circuit that enhances the meter’s responsiveness. The longer needle arc covers the amplifier’s entire output range. \u003cbr\u003e\u003cbr\u003e With innovative circuitry and virtually unlimited power output, the Progression M550 Mono Amplifiers deliver intimate musical details, three-dimensional sound staging, and startling dynamics not possible from less capable designs.\u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSignal-to-Noise Ratio: 105 dB, unweighted \/ 75 dB A weighted\u003c\/li\u003e\n\u003cli\u003eFinish: Silver or Black with Custom Finishes Available Upon Request\u003c\/li\u003e\n\u003cli\u003eTotal Harmonic Distortion: 350W @ 8Ω .015% @ 1 kHz\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 100 KΩ\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 0.1Ω\u003c\/li\u003e\n\u003cli\u003ePower: 550 watts @ 8Ω 1,100 watts @ 4Ω 2,200 watts @ 2Ω\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInputs: 2 balanced XLR\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.875 x 9.0 x 23.0 in \/ 45.4 x 22.9 x 58.4 cm\u003c\/li\u003e\n\u003cli\u003eWeight: 115lb \/ 52.2 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Default Title","offer_id":31467967643711,"sku":"","price":50000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/products\/dagostino_progression_m550_mono_amp_1000x1000__0002_M550fronttransparentcopy_0.jpg?v=1631737775"},{"product_id":"dan-dagostino-momentum-phonostage","title":"Dan D'Agostino Momentum Phonostage","description":"Locked inside the grooves of every vinyl record is the most realistic, most natural, most moving sound one could ever experience. The trick is getting that sound off the record and into your speakers. Dan D’Agostino always found this task challenging … yet irresistible. He knew that no matter how much care he took in the design of his phono preamps, there was always more soul lurking within those grooves. With the Momentum Phonostage, he has finally extracted every last bit of music hidden in even the most microscopic fluctuations in the finest vinyl records. \u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eHow did Dan do it? By combining the finest possible analog circuitry with the precision of digital control. Every adjustment is right there on the front panel of the Momentum Phonostage, with its own LED readout. You can reach them easily, without opening up the component, without having to go into onscreen menus, and without having to fuss with DIP switches or analog controls. They practically beg you to experiment! Pushbuttons on the front precisely control gain, resistive loading for the two MC inputs, resistive and capacitive loading for the MM input, and record EQ curve.\u003cbr\u003e\u003cbr\u003e Knowing that even the best circuitry is no better than the electricity that powers it, Dan gave the Momentum Phonostage what may well be the cleanest AC power supply ever created for a phono preamp. The Phonostage uses not one, but two separate power supply components: a transformer that sits on the floor, and power rectification and regulation circuits built into the base on which the Phonostage sits. Thus, the sensitive phono preamp circuits are double-isolated from the transformer electrically, and also separated by a safe physical distance.\u003cbr\u003e\u003cbr\u003e As an audiophile, Dan likes to follow his muse, changing and expanding his system in whatever way the music demands. He can’t stand it when an audio component imposes limitations on his ideas, and that’s why he gave the Momentum Phonostage enough inputs to handle multiple tonearms and even turntables. It has two moving-coil inputs and two moving-magnet inputs, each with XLR and RCA jacks, plus XLR and RCA outputs.\u003cbr\u003e\u003cbr\u003e The Momentum Phonostage uses the best parts available (and Dan’s tried most of them), and employs through-hole construction for maximum possible sound quality and reliability. And as with all the other products from Dan D’Agostino Master Audio Systems, each Momentum Phonostage is built by hand in Dan’s Arizona factory, literally within a dozen footsteps of Dan’s desk.\u003cbr\u003e\u003cbr\u003e Available in Silver or Black\u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cp\u003e\n•\tInputs: 4 pr inputs via XLR and RCA 2 MOVING COIL Inputs 2 MOVING MAGNET Inputs Inputs are selectable from the front panel\u003cbr\u003e\n•\tOutputs: 1 pr Balanced outputs via XLR\u003cbr\u003e\n•\tGain: 70 dB for MOVING COIL 50dB for MOVING MAGNET\u003cbr\u003e\n•\tInput Clipping: 1Khz typical for 70cM\/sec recorded velocity, gain trim at \"0\" MC 6mV MM 6mV Equivalent input noise, 20 to 20 kHz \u0026lt; 60nV Equivalent input noise current None Gain adjustment is +\/- 6dB and is selectable from the front panel. \u003cbr\u003e\n•\tEqualization Curves: There are five selectable equalization curves available from the front panel. These include the Standard RIAA equalization curves and 4 alternatives used by various record labels. The available curves are: RIAA FFRR RCA orthophonic COLUMBIA DGG Frequency response Represents the above curves +\/- .2 dB from 20 Hz to 20 kHz. \u003cbr\u003e\n•\tLoads: 16 selectable resistive loads for MOVING COIL and MOVINg MAGNET 16 selectable capacitive loads for MOVING MAGNET inputs\u003cbr\u003e\n•\tPower Supply: The base of the phono stage houses critical power supply rectificaition circuitry while a third chassis houses the power transformer for maximum isolation from AC-generated electromagnetic fields. \u003cbr\u003e\n•\tDimensions: Separate: Main: 15.5 x 12.75 x 3 1\/2 Power Supply: 13.5 x 11 x 2.5 Total Height: 7 Transformer Box: 4 x 10.5 x 2\u003cbr\u003e\n\u003c\/p\u003e\n\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Default Title","offer_id":31467967676479,"sku":"","price":35000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/files\/dag_momentumphono_1000x1000_4e7d1701-423b-4108-8b28-7b1f032de993.jpg?v=1684594429"},{"product_id":"dan-dagostino-momentum-s250-amplifier","title":"Dan D'Agostino Momentum S250 MxV Stereo Amplifier","description":"The Momentum S250 MxV stereo amplifier delivers the extraordinary sound quality of the Momentum M400 MxV monoblock in a more affordable stereo design.\u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eThe circuit topology and construction of the stereo amplifier mirror those of the monoblock, using the same ultra-efficient copper heat sinks with venturi cooling, the same 1% metal-film resistors, the same 69 MHz output transistors and the same fully complementary balanced configuration. The result is audio fidelity equaled by no other amplifier—except, of course, the Momentum M400 MxV monoblock itself. The leading compliment to the Momentum S250 MxV Stereo is the Momentum HD Preamplifier, creating a harmony worthy of any aficionado.  \n\nThe Momentum S250 MxV models feature techniques and topologies initially developed and implemented in the Relentless Mono Amplifier. This fullest expression of the Momentum circuitry is reflected in the new model name, MxV. Those with a physics background will recognize that MxV or Mass times Velocity is the equation for Momentum.\u003cbr\u003e\u003cbr\u003e Available in Silver or Black\u003c\/p\u003e\n\u003ch5\u003eADVANCES IN EVERY AREA\u003c\/h5\u003e\u003cp\u003e\nEvery major section of the amplifier - power supply, input, driver, and output stages - have all been enhanced in this advancement. A new transformer winding pattern provides over 50% more current output from the same transformer footprint. This additional current offers greater headroom during dynamic passages. A reinvisioned input stage combines a brand new circuit topology with advanced components feeding the driver and output stages. Crucial to the new circuit are the bipolar transistors powering the front end of the amplifier. In the Momentum S250 MxV amplifiers, new devices deliver ten times the current and power of the original devices. These wider bandwidth, higher power components extend low and high frequency performance with reduced distortion in both frequency extremes. Energizing the driver stage is a new bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. However, there is a limit to bias level in any amplifier. With this new circuit topology and our unique Copper heatsinks, thermal issues are not a practical concern in the Momentum S250 MxV amplifiers. The new bias scheme ensures bias consistency, preventing excessive temperatures even under the greatest demand. Additional power transistors in the output stage reduce workload for each device. By minimizing stress on each individual device, the entire output section works more efficiently. The result is a richer, more dynamic, intimate presentation regardless of musical genre.\u003cbr\u003e\u003cbr\u003e\n\nThe final output stage features new output transistors that were originally sourced for the flagship Relentless Monoblock Amplifier. The high-output transistors used on the Momentum S250 MxV are among the fastest available. Using 26 on the Momentum S250 MxV amplifiers they run at a blistering 69 MHz, permitting the Momentum S250 MxV to achieve incredible bandwidth. Each transistor mounts with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heat sinks. A capacitor\/resistor network connected to the base of each transistor ensures stability even at high frequencies and with low-impedance speakers. Additionally, every output transistor is measured and only devices that match the required performance specifications are included in the production of Momentum S250 MxV amplifiers. As with all D'Agostino models, the Momentum S250 MxV amplifiers feature discrete, direct-coupled balanced circuitry, the most accurate circuit platform possible.\u003c\/p\u003e\n\u003ch5\u003eFEATURES\u003c\/h5\u003e\u003cp\u003e\n\nDefying its compact size, the Momentum S250 MxV is a powerhouse amplifier. The backbone is the new ultra-quiet 1,800VA linear transformer with almost 50% greater current output. This engine drives a nearly 100,000ⲙF capacitor bank resulting in 250\/500\/1,000W of power output into 8\/4\/2Ω speaker loads for the Momentum S250 MxV The Momentum S250 MxV amplifiers are capable of driving any loudspeaker to its fullest potential.\u003cbr\u003e\u003cbr\u003e\n\nInnovative Cooling with Venturi Style Heatsinks\u003cbr\u003e\n\nA critical element of any amplifier output stage is circuitry known as the driver section. In the new Momentum S250 MxV, this stage is a fully complementary design. Individual transistors are employed for the positive and negative halves of the musical signal. This nearly doubles the current drive necessary to maximize the enhanced output stage that follows. The new output stage takes this increased drive to boost the open loop gain by the same factor of two. The result is a sound that is more authoritative, richer, and more expansive.\u003cbr\u003e\u003cbr\u003e\n\nHand-built and individually tested.\u003cbr\u003e\n\nEach Momentum S250 MxV stereo amplifier is hand-built and individually tested in D'Agostino's Arizona factory by our team of technicians and craftsmen.\u003cbr\u003e\u003cbr\u003e\n\nUpgrading to the MxV performance\u003cbr\u003e\n\nThe new Momentum S250 MxV employs the same chassis as previous Momentum amplifiers. All generations of Momentum stereo amplifiers can be upgraded to the Momentum S250 MxV performance level. All electrical enhancements are included in the upgrade while the original metalwork is retained. Original Momentum amplifiers receive a new 250 Watt meter plate reflecting the power output increase included in the upgrade. Momentum S250 units already have this power increase and meter.\u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency Response: 1 Hz to 200 kHz, -1 dB 20Hz to 20 kHz, ±0.1 dB\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio: 105 dB, unweighted\u003c\/li\u003e\n\u003cli\u003eFinish: Silver, Black, Custom Finishes Available Upon Request\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 1 MΩ\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 0.12Ω\u003c\/li\u003e\n\u003cli\u003ePower: 250 watts @ 8Ω 500 watts @ 4Ω 1,000 watts @ 2Ω\u003c\/li\u003e\n\u003cli\u003eDistortion: 250 watts @ 8Ω 0.1% @ 1 kHz\u003c\/li\u003e\n\u003cli\u003eInputs: 2 balanced XLR\u003c\/li\u003e\n\u003cli\u003eDimensions: 12.5 x 21.5 x 5.25 inches \/ 31.75 x 54.61 x 13.34 cm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- \/TABS --\u003e\n","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Default Title","offer_id":31467972231231,"sku":"","price":50000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/products\/d_agostino-momentum-s250-mxv-1000x1000.jpg?v=1637957674"},{"product_id":"dan-dagostino-progression-stereo","title":"Dan D'Agostino Progression S350 Stereo Amplifier","description":"The Progression S350 Stereo Amplifier adds a potent stereo option to the Progression family.  Leveraging our innovative Super Rail circuitry, the Progression S350 Stereo Amplifier exploits this unique technology delivering remarkable control and fidelity to any connected loudspeaker.\n\u003c!-- TABS --\u003e\n\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003e\nThe Progression S350 Stereo Amplifier adds a potent stereo option to the Progression family.  Leveraging our innovative Super Rail circuitry, the Progression S350 Stereo Amplifier exploits this unique technology delivering remarkable control and fidelity to any connected loudspeaker.\n\u003cbr\u003e\u003cbr\u003e\nEvery amplifier employs a voltage rail, actually two, a positive one and its companion negative partner. Voltage rails support the delivery of power to the speaker. The music signal swings between these two rails but due to natural loss, the musical signal never reaches the output rails’ full capability. Our Super Rail overcomes this limitation. Borrowing the idea of a turbo in a car engine, the Super Rail employs higher voltage rails in the sections prior to the output stage. This voltage \"boost\" allows the musical signal to exploit the full capability of the output voltage rails. Extending the musical signal swing closer to the output rails maximizes the performance of the output circuitry design itself. The result is improved dynamics, lower distortion, and a fierce grip of the speaker.\n\u003c\/p\u003e\n\u003ch5\u003eFEATURES\u003c\/h5\u003e\n\u003cp\u003e\nSubstantial Foundation\u003cbr\u003e\u003cbr\u003e\n\nAbundant power is required for realistic sound quality and is a cornerstone of Dan D’Agostino Master Audio Systems’ amplifier design. The Progression Stereo continues this practice. A graceful anodized Aluminum chassis houses a 2,000 VA power supply transformer coupled to nearly 100,000 microfarads of power supply storage capacitance. Paired to this foundation is a fully complementary driver stage, and output circuitry outfitted with 48 power transistors - 24 each for the left and right channels generating an imposing output. Initially used in the Relentless Mono, the output power device provides the foundation for an upgraded output stage. This transistor extends high frequency response, increases power handling 50%, and features tighter tolerance gain matching between complementary NPN\/PNP pairs.  A wider safe operating area and superior gain linearity provides greater thermal stability throughout the amplifiers’ power delivery. Coupling the new output device to the high efficiency heat sink design affords an increase in operating bias. Higher operating bias lowers crossover distortion improving instrument timbre and tonal reproduction. The Progression Stereo delivers 350 Watts into 8 Ohms and delivers 700 Watts into 4 Ohms, and properly doubles its output again into 2 Ohms, with a 1,400 Watt power output. The essence of live music, dynamic contrasts, are faithfully reproduced with leading edge transients spectacularly depicted.\u003cbr\u003e\u003cbr\u003e\n\nElegantly Powerful\n\u003cbr\u003e\u003cbr\u003e\nInspired by the elegant faces of classic Swiss watches, the Progression S350 Stereo is fronted by an exposed movement power meter. Featuring two 90° needle swing arms, a high-speed ballistic circuit enhances the meter’s responsiveness. Longer swing arms improve readability across the amplifier’s entire output range.\n\u003cbr\u003e\u003cbr\u003e\nDrawn directly from the Relentless Mono Amplifier, each heatsink is milled from a single, 48.5-pound (22-kilogram) aluminum billet slab. This highly efficient elliptical form dramatically improves the cooling ability of the design and assures that the Progression S350 Stereo Amplifier runs safely and reliably even when delivering its full-rated power. Standard finishes include silver and black with custom painted finishes available on request.\n\u003cbr\u003e\u003cbr\u003e\nCombining innovative circuitry and significant power, the Progression S350 Stereo amplifier provides loudspeakers the control element they need to achieve their full design expression.\n\n\u003c\/p\u003e\n\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cp\u003e\n\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSignal-to-Noise Ratio: 105 dB, unweighted \/ 75 dB A weighted\u003c\/li\u003e\n\u003cli\u003eFinish: Silver or Black with Custom Finishes Available Upon Request\u003c\/li\u003e\n\u003cli\u003eTotal Harmonic Distortion: 350W @ 8Ω .015% @ 1 kHz\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 100 KΩ\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 0.1Ω\u003c\/li\u003e\n\u003cli\u003ePower: 350 watts @ 8Ω 700 watts @ 4Ω 1,400 watts @ 2Ω\u003c\/li\u003e\n\u003cli\u003eInputs: 2 balanced XLR\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.875 x 9.0 x 23.0 in \/ 45.4 x 22.9 x 58.4 cm\u003c\/li\u003e\n\u003cli\u003eWeight: 115lb \/ 52.2 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\n\u003c!-- \/TABS --\u003e\n\n\n\n","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Default Title","offer_id":31467983372351,"sku":"","price":30000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/products\/dagostino_progression_S350_stereo_amp_1000x1000__0002_S350FrontTransparent.jpg?v=1631736112"},{"product_id":"dan-dagostino-progression-preamplifier","title":"Dan D'Agostino Progression Preamplifier","description":"The Progression Preamplifier adds new features previously not included in a D’Agostino preamplifier. Most noticeably, the Progression Preamplifier features an optional digital module. \u003c!-- TABS --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eThe Progression Preamplifier adds new features previously not included in a D’Agostino preamplifier. Most noticeably, the Progression Preamplifier features an optional digital module. The digital module adds coaxial, Toslink, and USB capability to the analog base model. A fully differential DAC handles PCM signals up to 24 bit\/384 KHz and DSD signals up to 4xDSD (11.2 MHz). \u003cbr\u003e\u003cbr\u003e This digital module feeds a discrete, fully complementary and balanced analog signal path from input to output. Negative feedback is not used anywhere in the Progression Preamplifier, nor is it necessary. Open-loop distortion is less than \u0026lt; 0.006% and the open loop bandwidth extends to over 100KHz.\u003cbr\u003e\u003cbr\u003e Also new is the Bluetooth technology featured in the included remote control. The Bluetooth backbone extends the range of the remote by a factor of five and eliminates line of sight limitations that are inherent in IR remote controls.\u003cbr\u003e\u003cbr\u003e The volume control is realized with a stepped balanced resistor ladder, using high-linearity solid-state relays and discrete precision resistors. The bandwidth and transient response of the preamplifier circuitry are unaffected by volume setting. The Progression Preamplifier has two independent outputs that can be individually operated or used simultaneously for driving a second amplifier in a subwoofer based system.\u003cbr\u003e\u003cbr\u003e Housed in a separate chassis, the power supply makes use of extensive electrical and magnetic shielding to keep radiated interference away from critical preamplifier circuits. Internal circuitry filters RF noise on the AC power, and compensates for asymmetric power waveforms and DC on the mains. A second DC output is included to power future Progression source components.\u003cbr\u003e\u003cbr\u003e Two analog meters, inspired by Swiss watch faces, function as VU meters during music playback. When volume is adjusted, the meter needles change to volume setting indicators. After adjustments are made, the meters revert back to VU meter operation. The meters also function as balance indicators when adjusting balance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eFinishes: Silver or Black (Custom Finishes Available Upon Request)\u003c\/li\u003e\n\u003cli\u003eAnalog Inputs: 4 pr. balanced via XLR connectors \/ 2 pr. single-ended via RCA connectors\u003c\/li\u003e\n\u003cli\u003eDigital Inputs (with optional DAC module installed): 1 USB \/ 1 coaxial via RCA connectors \/ 1 optical via Toslink connector\u003c\/li\u003e\n\u003cli\u003eMain Outputs: 2 pr. balanced via XLR connectors\u003c\/li\u003e\n\u003cli\u003eControl Inputs: 1 RS-232 input via a 9-pin D-subminiature connector \/ 1 12 VDC trigger input via 2-conductor 3.5 mm connector\u003c\/li\u003e\n\u003cli\u003eControl Outputs: 1 12 VDC trigger output via 2-conductor 3.5mm connectors (30 mA maximum per output)\u003c\/li\u003e\n\u003cli\u003eDimensions: w:17.25\" x h:6.1\" x d:13.1\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Preamp w\/DAC Module","offer_id":31467984158783,"sku":"PROGRESSION-PRE-DAC","price":36000.0,"currency_code":"USD","in_stock":true},{"title":"Preamp Only","offer_id":31467984191551,"sku":"PROGRESSION-PRE","price":28000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/files\/dag_prog_pre_1000x1000_095eb201-ed32-4d2b-8061-ad254526f5dc.jpg?v=1684594909"},{"product_id":"dan-dagostino-relentless-epic-1600-mono","title":"Dan D'Agostino Relentless Epic 1600 Monoblock Amplifier","description":"\u003cp\u003eFour years after setting the measure for amplifier excellence, the Relentless Mono Amplifier has undergone an upgrade - the Epic. Combining new circuit sections and components, the Relentless Epic 1600 Amplifier resets the standard in power amplifier performance.\u003c\/p\u003e\n*Price listed is for a pair.\n\u003cp\u003e\u003c!-- TABS --\u003e\u003c\/p\u003e\n\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eThe Relentless Epic 1600 Mono Amplifier is a true balanced design but unlike conventional bridged amplifiers, the Relentless Epic 1600 Mono Amplifier uses a single front end topology, based on current mirror circuitry to derive the symmetrical plus and minus rails. Typical bridged amplifier designs use two front end circuits making it virtually impossible to achieve perfect symmetry, and thus not balanced, between the plus and minus rail. In the Relentless Epic 1600 Mono Amplifier, distortion artifacts that appear on one half of the signal will also appear on the other half and thus cancel each other. This unique single front end circuit configuration allows for the awesome power output of the Relentless Epic 1600 Mono Amplifier with strikingly low distortion. New input stage devices deliver a 300% increase in current as compared to the previous devices. These wider bandwidth, higher power components extend low and high frequency performance. The Relentless Epic 1600 Mono Amplifier does not employ any global negative feedback which makes their distortion figures truly impressive. The amplifier’s open-loop linearity eliminates the need for this performance-robbing technique. Gain circuits operate in the current domain, assuring the Relentless Mono Amplifier performance does not fluctuate regardless of the demand. \u003cbr\u003e\u003cbr\u003e With its 5.5-kilowatt power supply feeding over 100 output devices, the Relentless Epic 1600 Mono Amplifier easily delivers 1,600 watts into 8 ohms—and when connected to a 220-volt or greater AC mains outlet, it doubles its output to 3,200 watts into 4 ohms and 6,400 watts into 2 ohms. This power output is maintained with the same musical composure at full power as it is at 1 watt.\u003c\/p\u003e\n\u003ch5\u003eBALANCE \u0026amp; FIDELITY\u003c\/h5\u003e\n\u003cp\u003eCrucial to the new circuit are the bipolar transistors powering the front end of the amplifier. Activating the driver stage is a new bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. With this new circuit topology and the unique Copper\/Aluminum heatsinks, thermal issues are irrelevant in the Relentless Epic 1600 amplifiers. The new bias scheme ensures bias consistency, preventing excessive temperatures even under the greatest demand. Additional regulation circuitry prevents any AC power anomalies from upsetting the amplifiers’ input circuitry. The core of the power supply is a 5.5 KVA linear transformer that uses multiple sections running in concert, potted and encased in a metal shield. This design reduces transformer noise to nearly zero and protects the audio circuitry from the transformer’s magnetic field. The transformer feeds a custom-designed rectifier circuit and a 600,000-microfarad\/100-volt capacitor bank. A custom-made Delrin brace mechanically grounds each capacitor so they won’t vibrate. An additional electrostatic shield isolates the A slow-start circuit activates the power supply in stages, eliminating concerns about capacitive inrush tripping household circuit breakers.\u003c\/p\u003e\n\u003ch5\u003eLOUDSPEAKER CONTROL\u003c\/h5\u003e\n\u003cp\u003eA critical element of any amplifier output topology is the driver section. In the new Relentless Epic 1600 amplifiers, the driver transistor has been upgraded to a new device that handles 33% more power per device. Additionally, the driver transistor count has doubled thus minimizing demand on each individual device and lowering overall amplifier output impedance without resorting to global negative feedback. Individual transistors are used for the positive and negative signal elements in an inter-digitated complementary arrangement. This nearly doubles the current drive necessary to maximize the enhanced output stage that follows. D’Agostino’s exclusive Super Rail concept makes maximum use of the incredible resources of this power supply. Super Rail employs higher voltage rails in the sections prior to the output stage, effectively “turbocharging” the amplifier.Every amplifier uses two voltage rails, a positive one and a negative one. Voltage rails support the delivery of power to the speaker. The music signal swings between these two rails but due to natural loss, the musical signal never reaches the output rails’ full capability. A Super Rail overcomes this limitation. The Super Rail employs higher voltage rails in the sections prior to the output stage. This voltage \"boost\" allows the musical signal to exploit the full capability of the output voltage rails. Extending the musical signal swing closer to the output rails maximizes the performance of the output circuitry design itself. This inspired technique improves dynamics, lowers distortion, and tightens the amplifier’s electrical grip on the speaker. The output stage features the same new transistor as in the driver section for sonic and technical consistency. Individual complementary pairs undergo our transistor matching protocol to ensure that gain linearity is virtually identical from 50mA to 5A. Additionally, every one of the 112 Relentless Epic 1600 output transistors used is measured and only devices that match the required performance specifications are included in the production of the Relentless Epic 1600 amplifiers. The high-output transistors used in the Relentless Epic are among the fastest available. These high-powered transistors mount with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heat sinks. A capacitor\/resistor network connected to the base of each transistor guarantees stability even at high frequencies and with low-impedance speakers.\u003c\/p\u003e\n\u003ch5\u003eSTRIKINGLY ELEGANT\u003c\/h5\u003e\n\u003cp\u003eThe Relentless Epic 1600 Mono Amplifier's power meter measures more than eight inches in diameter. The meter’s range and response automatically adjust to the level of the incoming signal, making it easy to read no matter how quiet or loud the musical passage. The Relentless Epic 1600 Mono Amplifiers’ unique heat sink combines copper and aluminum in a thermal engine that wicks away heat from the connected devices. The elaborate elliptical design expands on the venturi heat sink first explored in the Momentum series and makes certain that the Relentless Epic amplifiers run safely and reliably even when delivering its full rated power. Thermal, short circuit, and DC protection are included in a non-invasive but comprehensive defense against any external system faults. The entire chassis of the Relentless Epic and Epic 800 amplifiers are machined from solid aluminum, for superior shielding, thermal stability and vibration damping. High-precision milling allows the entire chassis to fit together solidly with no visible fasteners. \u003cbr\u003e\u003cbr\u003e The entire chassis of the Relentless Epic 1600 Mono Amplifier is machined from solid aluminum, for superior shielding, thermal stability and vibration damping. High-precision milling allows the entire chassis to fit together solidly with no visible fasteners. A 1 µm-deep diamond cut finish with a synthetic enamel coating completes the aesthetic.\u003c\/p\u003e\n\u003ch5\u003eAN AMP LIKE NO OTHER\u003c\/h5\u003e\n\u003cp\u003eIn keeping with the tradition begun with the Dan D’Agostino Audio Systems Momentum amplifiers, the Relentless Mono Amplifier offers a single XLR balanced input. Speaker connections are made using massive custom made binding posts made from gold-plated brass. A special tool is included for tightening speaker cable connections without damaging the terminals themselves. The new Relentless Epic 1600 Mono Amplifier uses the same chassis as the original Relentless Amplifier. Every Relentless Amplifier can be upgraded to the Relentless Epic level. All electrical enhancements are included in the upgrade while the original metalwork is retained. \u003cbr\u003e\u003cbr\u003e Just as no audio designer has been more relentless than Dan D’Agostino in his pursuit of perfection, we think it safe to say that no power amplifier has been designed and built to a higher standard than the Relentless Mono Amplifier.\u003c\/p\u003e\n\u003ch5\u003eRELENTLESS ORIGINS\u003c\/h5\u003e\n\u003cp\u003eDan D'Agostino talks about the origins of the Relentless Monoblock Amplifier:\u003c\/p\u003e\n\u003ccenter\u003e\u003ciframe height=\"480\" width=\"640\" src=\"https:\/\/player.vimeo.com\/video\/487391871\" class=\"dagvideo\" frameborder=\"0\" allow=\"autoplay; fullscreen\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/center\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency Response: 20 Hz to 20 kHz, ±0 dB \/ \u0026lt;0.1 Hz to 100 kHz +0\/-3 dB\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio: \u0026gt;113 dB, wideband, unweighted, ref. to full power output\u003c\/li\u003e\n\u003cli\u003eGain: 28 dB\u003c\/li\u003e\n\u003cli\u003eTotal Harmonic Distortion: \u0026lt;0.007% at 1 kHz, at 1,500 W, 8Ω\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 100 kΩ\u003c\/li\u003e\n\u003cli\u003eOutput Power: 1,500 W RMS at 8Ω \/ 3,000 W RMS at 4Ω \/ 6,000 W RMS at 2Ω\u003c\/li\u003e\n\u003cli\u003eOutput Voltage: 320 V peak-to-peak \/ 113 V RMS\u003c\/li\u003e\n\u003cli\u003eOutput Current: 400 A peak\u003c\/li\u003e\n\u003cli\u003eSlew Rate: 100 V\/μs\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: \u0026lt;0.03Ω, 20 Hz to 20 kHz\u003c\/li\u003e\n\u003cli\u003eDamping Factor: \u0026gt;267, 20 Hz to 20 kHz, ref. to 8 W\u003c\/li\u003e\n\u003cli\u003ePower Consumption: Standby: 40 W \/ Idle: 400 W \/ Maximum: 10 kW\u003c\/li\u003e\n\u003cli\u003eInputs: 1 balanced via XLR connector\u003c\/li\u003e\n\u003cli\u003eOutputs: 1 pair binding posts\u003c\/li\u003e\n\u003cli\u003eDimensions: 22.5 x 11.5 x 32.5 in (whd)\u003c\/li\u003e\n\u003cli\u003eWeight: 570lb\/258Kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Default Title","offer_id":31468056576063,"sku":"RELENTLESS-EPIC","price":385000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/products\/d_agostino-relentless-epic-1600-mono-amplifier-1000x1000.png?v=1661454664"},{"product_id":"dan-dagostino-momentum-hd","title":"Dan D'Agostino Momentum HD Preamplifier","description":"The Momentum HD Preamplifier builds on the award-winning platform of the Momentum Preamplifier adding the new HD status for the High Dynamic and High Definition improvements that are included in this substantial upgrade. The new Momentum HD Preamplifier incorporates advancements in the power supply, audio circuitry, and control sections. \u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eThe new Momentum HD Preamplifier incorporates advancements in the power supply, audio circuitry, and control sections.\u003cbr\u003e\u003cbr\u003e Technology Upgrades:\u003cbr\u003e\u003cbr\u003e Power Supply - The Momentum HD Preamplifier main power transformer is 33% larger as compared to the original Momentum Preamplifier. A unique winding technology, first employed in the Momentum M400 Amplifier, delivers greater power output from the same footprint. Taking advantage of this increased power supply capability, the output stages are now operating at a 36% percent higher voltage rail. The increased rail voltage delivers greater speed in both macro and micro dynamic contrasts.\u003cbr\u003e\u003cbr\u003e Audio Circuitry - A completely new discrete differential FET input stage features two current sources per leg and an input impedance greater than 1MOhm. This ultra high input impedance isolates the input stage and thus the entire audio signal path from external variables. This new input stage was an engineering experiment that exceeded our expectations with the level of fine-grain detail and delicate musical shadings achieved. The subtleties of voices are rendered with a lushness and richness that were simply unattainable previously. The new input stage has driven changes in the output stage as well to take full advantage of this enhancement.\u003cbr\u003e\u003cbr\u003e Control - Also new is the Bluetooth technology featured in the included remote control. The Bluetooth backbone extends the range of the remote by a factor of five and eliminates line of sight limitations that are inherent in IR remote controls. Newly designed tone and volume control circuitry increases range and precision in both circuits.\u003cbr\u003e\u003cbr\u003e The industrial design has also been updated with the signature copper elements being reshaped to better match the Momentum M400 and S250 amplifiers. The Momentum HD Preamplifier will be available in silver or black.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eFinish: Silver or Black (Custom Finishes Available Upon Request)\u003c\/li\u003e\n\u003cli\u003eInputs: 6 balanced XLR stereo\u003c\/li\u003e\n\u003cli\u003eOutputs: 2 balanced XLR stereo\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 0.1 Hz to 1 MHz, -1 dB 20Hz to 20 kHz, ±0 dB\u003c\/li\u003e\n\u003cli\u003eDistortion (Full output): \u0026lt;0.006%, 20 Hz to 20 kHz\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio: -105 dB, unweighted\u003c\/li\u003e\n\u003cli\u003eGain: +13 dB or +19 dB, switchable\u003c\/li\u003e\n\u003cli\u003ePower Consumption (at Standby): \u0026lt;1 watt\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 1 MΩ\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 10Ω\u003c\/li\u003e\n\u003cli\u003eDimensions (preamp): 4.3 x 18 x 12 inches (hwd)\u003c\/li\u003e\n\u003cli\u003eDimensions (power supply\/base): 3 x 11 x 8 inches (hwd)\u003c\/li\u003e\n\u003cli\u003eWeight: 98lbs\/45kg w\/ power supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Default Title","offer_id":31468097077311,"sku":"","price":42500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/files\/dag_momentumhdpre_1000x1000_2b63730c-f2be-478d-98b1-0f4becb7bb90.jpg?v=1684594273"},{"product_id":"dagostino-relentless-preamplifier","title":"Dan D'Agostino Relentless Preamplifier","description":"The new Relentless Preamplifier is the ultimate in preamplifier design. The preamplifier plays a critical role in musical playback; the point in the reproduction stage when the music signal is particularly susceptible to compromise through noise and distortion. The use of three separate chassis in the design of the Relentless Preamplifier—a dedicated audio chassis for each channel separated by a power supply\/control section—addresses these challenges and brings other benefits as well.\u003cbr\u003e\u003cbr\u003eThe Relentless Preamplifier comes in Silver or Black finish.\u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003e\u003cb\u003ePower Supply \u003c\/b\u003e\u003cbr\u003e Positioned between the two audio channels, the power supply makes use of extensive electrical and magnetic shielding to keep radiated interference out of critical preamplifier circuits. Internal line conditioning circuitry filters RF noise on the AC power and compensates for asymmetric power waveforms and DC on the mains. Power for the preamplifier stages comes from two 150 VA toroidal transformers – one dedicated to the analog circuitry and one for the digital and control circuitry. These transformers drive an 8-amp bridge rectifier and 26,400 microfarads of filter capacitance. The two regulators for the analog stages are scaled-down versions of those used in the Relentless Mono amplifier. The separate digital regulator is a monolithic platform with thermal and current limiting protection in the unlikely event of a fault. The Relentless Preamplifier has nearly as much power supply capability as many power amplifiers.\u003cbr\u003e\u003cbr\u003e \u003cb\u003eRoom to Breathe \u003c\/b\u003e\u003cbr\u003e The input stage in each mono preamplifier is the result of a design experiment for a circuit that hadn’t been used in any previous D’Agostino preamplifier. As part of development, a version was tested in the existing Momentum Preamplifier. The overwhelmingly positive results led directly to the launch of the Momentum HD Preamplifier. From there, the fullest expression of this idea was developed, and the Relentless Preamplifier was underway.\u003cbr\u003e\u003cbr\u003e The audio circuit topology starts with a new discrete differential FET input stage featuring a voltage input signal capability of an extraordinary 30 volts. With an input impedance of over 1 MOhm, the Relentless Preamplifier’s front end is immune to source related electrical issues. In normal operation, component heating can lead to performance and sonic degradation. Developed specifically for the Relentless Preamplifier, a unique circuit maintains a stable bias so that temperature related anomalies are offset thus preserving performance during extended listening.\u003cbr\u003e\u003cbr\u003e Featuring only balanced XLR inputs the Relentless Preamplifier topology rejects common-mode input noise over an unusually wide bandwidth. All signal gain is realized in the current domain using proprietary multiple-output current mirrors with nearly 30 times the linearity of other designs. Executed with four-layer circuit boards for superior signal quality. The use of four-layer boards dramatically reduces distortion and propagation levels as compared to the more commonplace, two layer boards.\u003cbr\u003e\u003cbr\u003e The analog and digital circuit elements are isolated, including ground planes, from each other. Where necessary, digital control signals are optically coupled to analog circuits. The signal switching relays are hermetically sealed and use gold-plated contacts for maximum signal integrity.\u003cbr\u003e\u003cbr\u003e Utilizing no negative feedback anywhere, core D’Agostino circuit concepts include a signal path that is fully complementary and balanced from input to output achieving a frequency response flat to 120 kHz.. The overall result is a musically dense and dynamically rich signal presented to the balanced outputs.\u003cbr\u003e\u003cbr\u003e \u003cb\u003eSeparate but Linked\u003c\/b\u003e\u003cbr\u003e Arguably, the most striking element of the Relentless Preamplifier is the pair of volume controls fronting the two audio chassis. Volume control circuits are often overlooked, if not actively minimized, in preamplifier designs. This is not the case in the Relentless Preamplifier. Each volume control is constructed using 14 separate metal components ensuring the smoothest response and control of the military-grade, high-linearity solid-state switches and discrete precision resistors employed in the volume circuit. The bandwidth and transient response of the Relentless Preamplifier is completely unaffected by the volume setting. As a result, high frequencies sound especially smooth and extended, and music emerges from “jet black” silence.\u003cbr\u003e\u003cbr\u003e The volume settings are displayed via the elegant swiss watch inspired volume wands or can be displayed numerically, from 0 to 99.\u003cbr\u003e\u003cbr\u003e \u003cb\u003eTwo Preamplifiers in One\u003c\/b\u003e\u003cbr\u003e The Relentless Preamplifier is a two source\/two zone preamplifier. This means that the Relentless Preamplifier can simultaneously control the switching and volume of two sources in two separate rooms or zones. Listening sources may be two analog sources or when equipped with the optional digital streaming module, one digital source and one analog source. In a one zone system, either volume control will adjust volume in the main room or Zone 1. If two zone operation is desired, the upper volume control manages the Zone 1 volume and the lower volume control adjusts the Zone 2 volume.\u003cbr\u003e\u003cbr\u003e \u003cb\u003ePreamplifier status in your hand\u003c\/b\u003e\u003cbr\u003e Housed in machined aluminum and copper, the Relentless Preamplifier remote control is a comfortable design operated via touch pad. Control buttons are minimized with most of the operation executed by navigating via a tactile touch pad. Bluetooth 5.0 technology extends the usable range of the remote control and eliminates the line-of-sight issues that plague conventional infrared designs. New for the Relentless Preamplifier is bi-directional remote-control functionality. All adjustments made on the Relentless Preamplifier front panel are reflected on the remote control’s display screen including input, volume, and balance selections.\u003cbr\u003e\u003cbr\u003e \u003cb\u003eIntegration Features\u003c\/b\u003e\u003cbr\u003e The Relentless Preamplifier’s primary focus is centered around ultimate stereo playback but it fits nicely in a home theater system. Input Three can be configured for Theater Bypass. In this mode, the Relentless Preamplifier’s volume control is bypassed and volume control for the main loudspeakers is now controlled by the connected surround-sound processor. RS-232 and 12 Volt triggers facilitate integration into advanced home control systems. Additional DC power outputs for future products as well as two programming ports offers easy growth and performance options in the future.\u003cbr\u003e\u003cbr\u003e \u003cb\u003eOptional Digital Streaming Module (DSM)\u003c\/b\u003e\u003cbr\u003e The Relentless Preamplifier is the first D’Agostino preamplifier to offer an optional DSM. This digital enhancement adds connectivity for legacy sources, USB functionality, and premier streaming capability. Field upgradeable, the DSM adds SPDIF coaxial, Optical, USB-A, and RJ-45 and Wi-Fi network inputs. For latency free playback of high-resolution network content, 10\/100\/1000 Gigabit Ethernet is supported.\u003cbr\u003e\u003cbr\u003e Customized apps for iOS devices provide easy control of music collections, streaming content, and unit control. Subscription streaming services Tidal, Qobuz, and Spotify are native within the app. With appropriately encoded music files, MQA decoding is standard. Additionally, Roon Music management is also available as an alternative music management program.\u003cbr\u003e\u003cbr\u003e Completely isolated from the analog circuitry, the DSM is housed in the power supply\/control chassis. Requiring three separate circuit boards the core element is a pair of DACs configured in differential mode with each one configured to handle the positive and negative signals for each channel. Capable of handling today’s highest resolution sources, PCM signals up to 32 bit\/384 KHz and DSD signals up to DSD256 (11.2MHz) are decoded natively. Often overlooked or downplayed, the analog section of a DAC significantly impacts the final sonic performance of digital music. Internal balanced connections carry the final analog signal to the connecting feet and onward to each audio chassis. From here, the analog music signal takes advantage of the entire power and analog circuitry within the three chassis of the Relentless Preamplifier.\u003cbr\u003e\u003cbr\u003e Coupling innovative circuitry, distinctive materials, and artisan manufacturing excellence in a sophisticated architecture, the Relentless Preamplifier is the perfect centerpiece for the ultimate music system.\u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency Response 0.1 Hz to 120 kHz, +\/- 0.0 dB\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio -105 dB, unweighted \/ -100 dB, weighted\u003c\/li\u003e\n\u003cli\u003eGain + 8\/+14dB selectable\u003c\/li\u003e\n\u003cli\u003eFinish Silver or Black with Custom Finishes Available Upon Request\u003c\/li\u003e\n\u003cli\u003eTotal Harmonic Distortion \u0026lt;.006 to\u0026gt;\u003c\/li\u003e\n\u003cli\u003eInputs 5 pr - Balanced via XLR connectors\u003c\/li\u003e\n\u003cli\u003eOutputs 2 pr Balanced via XLR connector for Zone 1, 1 pr Balanced via XLR\u003c\/li\u003e\n\u003cli\u003eDimensions 17 x 1.75 x 17 in \/ 43.2 x 34.9 x 43.2 cm\u003c\/li\u003e\n\u003cli\u003eWeight 132 lb \/ 60 kg\u003c\/li\u003e\n\u003cli\u003eDimensions (Preamp) 17x 3.9 x 17 in \/ 43.2 x 9.9 x 43.2 cm\u003c\/li\u003e\n\u003cli\u003eDimensions (Power Supply\/Base) 17 x 3.9 x 17 in \/ 43.2 x 9.9 x 43.2 cm\u003c\/li\u003e\n\u003cli\u003eAnalog Inputs 5 stereo pairs of balanced XLR\u003c\/li\u003e\n\u003cli\u003eDigital Inputs (w\/DAC Module Installed) 1 USB A type, 1 Optical, 1 SPDIF, 1 coaxial, Ethernet RJ45, 1 WiFI\u003c\/li\u003e\n\u003cli\u003eControl RS-232\u003c\/li\u003e\n\u003c!--.006--\u003e\n\u003c\/ul\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Preamplifier","offer_id":39495111376959,"sku":"","price":165000.0,"currency_code":"USD","in_stock":true},{"title":"Preamplifier w\/Digital Streaming Module","offer_id":39495111409727,"sku":"","price":187500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/products\/dagostino-relentless-preamplifier-silver-1000x1000.jpg?v=1635343892"},{"product_id":"dagostino-momentum-mxv-integrated-amplifier","title":"Dan D'Agostino Momentum MxV Integrated Amplifier","description":"Combining the front end technology from the Momentum HD Preamplifier and the power section of the Momentum MxV amplifier, the Dan D'Agostino Momentum MxV Integrated Amplifier delivers Momentum Series performance in a compact framework. The elegant design only hints at the advanced circuitry within its Aluminum and Copper housing. \u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eBenefiting from extensive development previously applied to the Momentum Series separate components, the Momentum MxV integrated Amplifier executes on the potential that an integrated solution offers. The Momentum MxV integrated Amplifier is a modular design that is configurable to a listener’s preferences.\u003c\/p\u003e\n\u003cp\u003eThe core line stage preamplifier section can be augmented to include a digital streaming and\/or a phonostage module. When fully equipped, the Momentum MxV Integrated Amplifier topology is a seamless circuit working as one from input to output. Each internal section is still highly specialized but knowing the exact complement of power supply, control, and audio circuitry being used together, affords engineering a vision of the system that is typically not possible.\u003c\/p\u003e\n\u003ch5\u003eFEATURES\u003c\/h5\u003e\n\u003cp\u003e\u003cb\u003eThe Power of Supply:\u003c\/b\u003e\u003cbr\u003e Defying its compact size, the Momentum MxV Integrated is a powerhouse amplifier. The backbone is a new ultra-quiet 2,000VA linear transformer. A unique toroidal winding technology, first employed in the Momentum M400 amplifier, delivers greater power output from a similarly sized conventional transformer keeping the Momentum MxV Integrated surprisingly small for its capability. This engine drives a nearly 60,000ⲙF capacitor bank resulting in 250\/500\/1,000W power output into 8\/4\/2Ω speaker loads. Internal circuitry filters RF noise from the AC powerline and compensates for asymmetric power waveforms and DC on the mains.\u003c\/p\u003e\n\u003cp\u003eThe scope of the Momentum MxV Integrated amplifier design requires the use of two separate chassis – a dedicated audio chassis and a separate power supply. The two chassis interlock through special mechanisms in the mounting feet of each chassis. Thirty pin interlocking 30-amp, gold plated connectors eliminate wiring normally used for these applications and the associated anomalies that can occur. This distinctive construction isolates the audio signal completely, both physically and electrically from the power supply section. Physical isolation offers additional room to maximize both power and audio circuitry.Preamplifier has nearly as much power supply capability as many power amplifiers.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cb\u003eAudio Circuitry: \u003c\/b\u003eEvery major section of the integrated amplifier has been touched by technology advancements pioneered in the Relentless and Momentum series models. Starting with the preamplifier section, six individual left and right circuit boards make up the input, volume control, and output sections. The core topologies have been appropriated from the Momentum HD Momentum Preamplifier including the innovative input stage.\u003c\/p\u003e\n\u003cp\u003eThe distinct advantage of an integrated amplifier is the \u003cstrong\u003edirect connection of the preamplifier amplifier stage to the amplifier input section.\u003c\/strong\u003e This pure path eliminates connector and cable anomalies that potentially impact electrical and sonic performance.\u003c\/p\u003e\n\u003cp\u003eCrucial to the new circuit are the \u003cstrong\u003ebipolar transistors\u003c\/strong\u003e powering the front end of the amplifier. In all of the Momentum MxV amplifiers, new devices deliver ten times the current and power of previously used devices. These wider bandwidth, higher power components extend low and high frequency performance with reduced distortion in both frequency extremes.\u003c\/p\u003e\n\u003cp\u003eEnergizing the \u003cstrong\u003edriver stage\u003c\/strong\u003e is a new bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. With the new MxV circuit topology and unique Copper Aluminum thermal engine heatsink, heat issues are not a practical concern in the Momentum MxV Integrated Amplifier. The new bias scheme ensures bias consistency, preventing excessive temperatures even under the greatest demand. Additional power transistors in the output stage reduce workload for each device. By minimizing stress on each individual device, the entire output section works more efficiently. The result is a richer, more dynamic, intimate presentation regardless of musical genre.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003efinal output stage\u003c\/strong\u003e features new output transistors that were originally sourced for the flagship Relentless Monoblock Amplifier. 28 high speed, high-output transistors are used in the Momentum MxV Integrated. Each transistor mounts with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heat sinks. A capacitor\/resistor network connected to the base of each transistor ensures stability even at high frequencies and with low-impedance speakers. Additionally, every output transistor is measured and only devices that match the required performance specifications are included in the production of the Momentum MxV Integrated Amplifier. As with all D'Agostino models, the Momentum MxV Integrated Amplifiers feature discrete, direct-coupled balanced circuitry, the most accurate circuit platform possible.\u003c\/p\u003e\n\u003cp\u003eAn \u003cstrong\u003eoptional digital module\u003c\/strong\u003e vaults the Momentum MxV Integrated into the cutting edge of today’s digital listening environment. The digital enhancement adds connectivity for legacy sources, both source and host USB functionality, and premier streaming functionality. Field upgradeable, the digital module adds SPDIF coaxial, Optical, and USB-A for legacy digital components and Ethernet and Wifi for network-based music. A dedicated iOS D’Agostino DSM app provides built-in Tidal, Qobuz, MQA decoding, plus complete unit control. PCM signals up to 24 bit\/192 KHz and DSD signals up to 4xDSD (11.2 MHz)\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eoptional phono module\u003c\/strong\u003e adds vinyl playback capability to the Momentum MxV Integrated Amplifier. Low output moving coil cartridges are supported with over 60dB of gain and loading options from 100Ohm-47kOhm.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003ededicated headphone amplifier\u003c\/strong\u003e for today’s high performance headphones is hidden behind a sliding door.\u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency Response: 0.1 Hz to 100 kHz +0\/-3 dB, 20 Hz to 20 kHz, ±0.1 dB\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio: 75 dB, unweighted\u003c\/li\u003e\n\u003cli\u003eFinish: Silver Black Custom Finishes Available Upon Request\u003c\/li\u003e\n\u003cli\u003eTotal Harmonic Distortion: 250 watts @ 8Ω 0.05% @ 1 kHz\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 1 MΩ\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 7Ω\u003c\/li\u003e\n\u003cli\u003ePower: 250 watts @ 8Ω 500 watts @ 4Ω 1,000 watts @ 2Ω\u003c\/li\u003e\n\u003cli\u003eDistortion: 200 watts @ 8 Ω \u0026lt; 0.1%, 20 Hz to 20 kHz\u003c\/li\u003e\n\u003cli\u003eInputs: 3 pr stereo balanced XLR, 1 pr stereo single-ended RCA\u003c\/li\u003e\n\u003cli\u003eOutputs: 1 pr stereo balanced XLR, 1 1\/4\" headphone jack, 1 pr binding post\u003c\/li\u003e\n\u003cli\u003eDimensions: 18.25 x 9.5 x 17.8 in \/ 46.4 x 24.1 x 45.2 cm\u003c\/li\u003e\n\u003cli\u003eWeight: 112 lb \/ 50.8 kg\u003c\/li\u003e\n\u003cli\u003eDigital Inputs (w\/DAC Module Installed): 1 ea USB A type, Optical, SPDIF coaxial, Ethernet RJ45, Wi-Fi\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e \u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"No Modules (MxV Integrated Only)","offer_id":40121841319999,"sku":"mxvintegrated","price":72500.0,"currency_code":"USD","in_stock":true},{"title":"with Phono Module","offer_id":40121841221695,"sku":"mxvintegrated-phono","price":78500.0,"currency_code":"USD","in_stock":true},{"title":"with Streaming Module","offer_id":40121841254463,"sku":"mxvintegrated-streaming","price":85000.0,"currency_code":"USD","in_stock":true},{"title":"with Phono \u0026 Streaming Modules","offer_id":40121841287231,"sku":"mxvintegrated-phono-streaming","price":91000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/files\/dag_momentumint_1000x1000_0007_Momentum13617.jpg?v=1688740732"},{"product_id":"dan-dagostino-relentless-800-mono-amplifier","title":"Dan D'Agostino Relentless 800 Monoblock Amplifier","description":"\u003cp\u003eThe new Relentless 800 Mono Amplifier from Dan D'Agostino brings the remarkable Relentless audio quality to a more compact platform. Priced as a pair. Available in Silver, Black, or custom finishes.\u003c\/p\u003e\n\u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eThe Relentless 800 features enhanced power supply, input, driver and output stages. It offers lower power output than its bigger brother, yet delivers virtually unlimited power and dynamic contrasts. Even at low volume levels, it produces nuanced and musical sound.\u003c\/p\u003e\n\u003ch5\u003eFEATURES\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cb\u003ePower to spare: \u003c\/b\u003e\u003c\/span\u003eThe core of the Relentless Amplifiers’ \u003cstrong\u003epower supply\u003c\/strong\u003e contains a shielded transformer with multiple winding sections. It produces nearly zero noise and shields the audio circuitry from the transformer's magnetic field. Each capacitor is also securely grounded with a special holder, isolating it from any vibrations. \u003cbr\u003eWith its nearly four-kilowatt transformer and 400,000 F capacitance power supply feeding 84 output devices, the Relentless 800 easily delivers 800 watts into 8 ohms—and when connected to a 220-volt outlet, doubles its output to 1,600 watts into 4 ohms and 3,200 watts into 2 ohms.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cb\u003eThe Design: \u003c\/b\u003e\u003c\/span\u003eThe Relentless 800 employs an all-new, fully complementary design based around a \u003cstrong\u003eprecision input stage\u003c\/strong\u003e that maintains an essentially perfect balance between the positive and negative components of the signal. Any distortion artifacts that appear on one half of the signal will also appear on the other half, and thus cancel each other. Gain circuits operate in the current domain, assuring the amplifiers’ performance does not fluctuate regardless of the speaker demand.\u003c\/p\u003e\n\u003cp\u003eIn the Relentless 800 amplifiers, new\u003cstrong\u003e input stage\u003c\/strong\u003e devices deliver a 300% increase in current as compared to the previous devices. These wider bandwidth, higher power components extend low and high frequency performance with reduced distortion in both frequency extremes. Global negative feedback is not employed, nor is it required as the amplifiers’ open-loop linearity eliminates the need for this performance-robbing technique.\u003c\/p\u003e\n\u003cp\u003eActivating the reimagined \u003cstrong\u003edriver stage\u003c\/strong\u003e is a new bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. With this new circuit topology and the unique Copper\/Aluminum heatsinks, thermal issues are irrelevant in the Relentless 800 amplifier. The new scheme ensures bias consistency, preventing excessive temperatures even under the greatest demand.\u003c\/p\u003e\n\u003cp\u003eIn the new Relentless 800 amplifiers, the \u003cstrong\u003edriver transistor\u003c\/strong\u003e has been upgraded to a new device that handles 33% more power per device. Additionally, the driver transistor count has doubled thus minimizing demand on each individual device and lowering overall amplifier output impedance without resorting to global negative feedback. Individual transistors are used for the positive and negative signal elements in an inter-digitated complementary arrangement. This nearly doubles the current drive necessary to maximize the enhanced output stage that follows.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSuper Rail\u003c\/strong\u003e employs higher voltage rails in the sections prior to the output stage, effectively “turbocharging” the amplifier and exploiting the full capability of the output voltage rails—which improves dynamics, lowers distortion, and tightens the amplifiers’ electrical grip on the speaker.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eoutput stage\u003c\/strong\u003e features the same new transistor as in the driver section for sonic and technical consistency. Individual complementary pairs undergo our transistor matching protocol to ensure that gain linearity is virtually identical from 50mA to 5A. Additionally, every one of the 84 output transistors used is measured and only devices that match the required performance specifications are included in the production of Relentless 800 amplifiers. The high-output transistors used in the Relentless 800 are among the fastest available. These high-powered transistors mount with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heat sinks. A capacitor\/resistor network connected to the base of each transistor guarantees stability even at high frequencies and with low-impedance speakers. As with all D'Agostino models, the Relentless 800 amplifiers feature discrete, direct-coupled balanced circuitry - the most accurate circuit platform possible.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eElegantly Functional:\u003c\/strong\u003e\u003c\/span\u003e The Relentless 800 Amplifier’s \u003cstrong\u003eunique heat sink\u003c\/strong\u003e combines copper and aluminum in a thermal engine that wicks away heat from the connected devices. The elaborate elliptical design expands on the venturi heat sink first explored in the Momentum series and makes certain that the Relentless amplifiers run safely and reliably even when delivering its full rated power. Thermal, short circuit, and DC protection are included in a non-invasive but comprehensive defense against any external system faults.\u003cbr\u003eThe \u003cstrong\u003eentire chassis\u003c\/strong\u003e of the Relentless 800 amplifiers are machined from\u003cstrong\u003e solid aluminum\u003c\/strong\u003e, for superior shielding, thermal stability, and vibration damping. High-precision milling allows the entire chassis to fit together solidly with no visible fasteners.\u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cp\u003e\u003cb\u003eFrequency Response\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003e20 Hz to 20 kHz, ±0.1 dB\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSignal-to-Noise Ratio\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003e113 dB, unweighted, ref. to full power output \/ 80 dB, A weighted\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFinish\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003eSilver \/ Black \/ Custom finishes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTotal Harmonic Distortion\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003e800 watts @ 8Ω 0.1% @ 1 kHz\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Impedance\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003e120 MΩ\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Power\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003e800 watts @ 8Ω \/ 1,600 watts @ 4Ω \/ 3,200 watts @ 2Ω\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInputs\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003e1 balanced XLR\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutputs\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003e1 pr Speaker Binding Post\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003e21.6 x 10.4 x 26.0 in \/ 54.9 x 26.4 x 66.0 cm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight\u003c\/b\u003e \u003cspan style=\"font-weight: 400;\"\u003e320 lb \/ 145 kg\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDrawings\u003c\/b\u003e \u003ca href=\"https:\/\/dandagostino.com\/sites\/default\/files\/2023-06\/Relentless%20800%20full%20dimensions.PDF\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eRelentless 800 full dimensions.PDF\u003c\/span\u003e\u003c\/a\u003e\u003cspan style=\"font-weight: 400;\"\u003e (291.73 KB)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSell Sheet\u003c\/b\u003e \u003ca href=\"https:\/\/dandagostino.com\/sites\/default\/files\/2023-05\/Relentless%20800%20Monoblock%20Amplifier%20Sell%20Sheet.pdf\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eRelentless 800 Monoblock Amplifier Sell Sheet.pdf\u003c\/span\u003e\u003c\/a\u003e\u003cspan style=\"font-weight: 400;\"\u003e (472.82 KB)\u003c\/span\u003e\u003c\/p\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Silver","offer_id":40247571906623,"sku":"","price":225000.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":40247571939391,"sku":"","price":225000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/files\/R8001.jpg?v=1686688832"},{"product_id":"dagostino-pendulum-integrated-amplifier","title":"D'Agostino Pendulum Integrated Amplifier","description":"\u003cp\u003eThe Pendulum Integrated Amplifier is housed in a chassis that epitomizes the renowned D’Agostino aesthetic.\u003c\/p\u003e\n\u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eThe Pendulum Integrated Amplifier caters to the discerning needs of today’s music enthusiasts and audiophiles alike. Its analog platform boasts one single-ended input and three balanced inputs, including a theater pass-through feature. With balanced preamplifier outputs facilitating seamless integration of subwoofer(s), the Pendulum Integrated offers maximum versatility. A moving coil phono module extends its functionality to accommodate turntable playback.\u003c\/p\u003e\n\u003ch5\u003eFEATURES\u003c\/h5\u003e\n\u003cp\u003e\u003cb\u003eCircuitry Excellence\u003c\/b\u003e\u003cbr\u003eAt the heart of the Pendulum Integrated Amplifier lies the ingeniously re-engineered JFET input circuit topology, derived from the acclaimed Momentum C4 Preamplifier. This innovative technology upgrades the performance and precision of the entire platform, guaranteeing an immersive listening experience that transcends expectations from a component its size. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eExceptional Power Supply\u003c\/b\u003e\u003cbr\u003eDriven by a custom toroidal transformer rated at 750VA and complemented by a nearly 25,000 μF capacitor bank, the Pendulum Integrated Amplifier delivers robust power output within a compact design. This advanced power supply ensures stable performance and minimizes distortion, allowing the amplifier to effortlessly drive challenging loudspeakers to their full potential. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eVersatile Connectivity\u003c\/b\u003e\u003cbr\u003eSeamless integration with a variety of audio sources is key to the Pendulum’s versatility. Analog connections include one single-ended input for turntable use and three balanced inputs, one with theater pass-through. Balanced preamplifier outputs allow for effortless integration of subwoofer(s), providing maximum flexibility to tailor your sound experience. Additionally, a moving-coil phono module accommodates turntable playback, catering to vinyl enthusiasts with exceptional performance. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eDigital Capabilities\u003c\/b\u003e\u003cbr\u003eThe Pendulum Integrated Amplifier is equipped with a comprehensive suite of digital connections, ensuring seamless integration with modern audio sources and systems. Featuring optical and both RJ45 and Wi-Fi network connections, it offers unparalleled connectivity options. Notably, it is the first D’Agostino component to include an HDMI input with eARC functionality, simplifying integration into home entertainment systems. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvanced Control\u003c\/b\u003e\u003cbr\u003eWith a Bluetooth-enabled remote control housed in Delrin®, the Pendulum Integrated Amplifier offers intuitive control over unit functions and settings. The remote’s ergonomic design and LCD screen mirror the information displayed on the component’s front panel. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eElegant Design\u003c\/b\u003e\u003cbr\u003eHighlighting its aesthetic appeal, the Pendulum Integrated Amplifier features an LCD display inspired by Swiss watch design, offering real-time updates on unit status, functions, and metadata. This refined detail adds a touch of sophistication to any audio setup.\u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency Response: 1 Hz to 80kHz, -0.5dB \/ 20 Hz to 20 kHz, +-0.01 dB\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio: 100 dB, unweighted; 95 db A-weighted\u003c\/li\u003e\n\u003cli\u003eFinish: Silver \/ Black (custom painted finishes available upon request.)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 1 MΩ\u003c\/li\u003e\n\u003cli\u003eOutput Power: 120 W @ 8 Ω \/ 240 W @ 4 Ω\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: .1Ω\u003c\/li\u003e\n\u003cli\u003eDistortion (Full output): 120 W @ 8Ω \/ .015% @ 1kHz\u003c\/li\u003e\n\u003cli\u003eOutputs: 1 pr balanced XLR stereo; 5-way speaker binding posts; ¼-inch headphone\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.0 x 4.65 x 14.0 in \/ 43.2 x 11.8 x 35.6 cm (w x h x d)\u003c\/li\u003e\n\u003cli\u003eWeight: 35.0 lb \/ 15.9 kg\u003c\/li\u003e\n\u003cli\u003eAnalog Inputs: 3 pr balanced XLR stereo; 1 pr unbalanced RCA stereo\u003c\/li\u003e\n\u003cli\u003eDigital Inputs (w\/DAC Module Installed): 1 ea optical; RJ45; Wi-Fi; HDMI with eARC\u003c\/li\u003e\n\u003cli\u003eControl: RS-232\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Silver \/ Base Model","offer_id":41597494165567,"sku":null,"price":18000.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ With DSM","offer_id":41597494198335,"sku":null,"price":21000.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ With Phono","offer_id":41597494231103,"sku":null,"price":19500.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ With DSM \u0026 Phono","offer_id":41597494263871,"sku":null,"price":22500.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Base Model","offer_id":41597494296639,"sku":null,"price":18000.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ With DSM","offer_id":41597494329407,"sku":null,"price":21000.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ With Phono","offer_id":41597494362175,"sku":null,"price":19500.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ With DSM \u0026 Phono","offer_id":41597494394943,"sku":null,"price":22500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/files\/dag_pendulum_1000x1000_0002_medres_original_Pendulum-Product_3.jpg?v=1715870186"},{"product_id":"dagostino-momentum-c2-preamplifier","title":"D'Agostino Momentum C2 Preamplifier","description":"\u003cp\u003eUnveiling Complementary Four Circuit Topology.\u003cbr\u003e\u003cbr\u003eAt the heart of the Momentum C2 Preamplifier lies Dan D’Agostino’s revolutionary complementary four-circuit topology.\u003c\/p\u003e\n\u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eThis unique input stage circuitry sets a new standard for performance and precision, delivering unparalleled clarity and fidelity to your audio experience. Utmost attention to design detail ensures optimal mechanical and electrical isolation, guaranteeing pristine signal integrity throughout the critical preamplification stage.\u003c\/p\u003e\n\u003ch5\u003eFEATURES\u003c\/h5\u003e\n\u003cp\u003eUnrivaled Audio Circuitry\u003cbr\u003e\u003cbr\u003eBuilding on the legacy of the Momentum HD Preamplifier, the Momentum C2 topology utilizes an array of four JFET transistors in a complementary, differential, push-pull arrangement, dramatically increasing input impedance and reducing noise. Its unique, discrete dual-complementary differential JFET input stage achieves exceptional performance and stability in every system configuration.\u003cbr\u003eFor less-than-audiophile-grade recordings, transformative tone-control circuitry remains entirely transparent in its operation, ensuring zero impact on the signal path when inactive. Concealed behind a discreet door on the front panel, a headphone jack featuring independent amplifier circuitry opens the world of private listening at the most refined level. \u003cbr\u003e\u003cbr\u003eUnmatched Power Supply\u003cbr\u003e\u003cbr\u003eThe enhanced dynamics and power delivery of the Momentum C2 Preamplifier are a product of an advanced power supply, housed in a separate chassis for maximum isolation, and powering the audio chassis through a 20-amp interlocking connector. The power supply features individual custom toroidal transformers dedicated to analog and digital circuitry, respectively, with internal circuitry addressing RF noise and powerline irregularities.\u003cbr\u003eCreated with precision and elegance in mind, the Momentum C2 Preamplifier expresses a sleek and sophisticated design. The included bi-directional remote control, housed in precision-machined aluminum and Delrin®, offers intuitive control over unit functions and settings. With its ergonomic design and LCD screen, the remote provides a seamless user experience, mirroring information from the preamplifier’s front panel display. \u003cbr\u003e\u003cbr\u003eDigital Streaming Module (DSM) \u003cbr\u003e\u003cbr\u003eThe Momentum C2 Preamplifier offers an optional DSM that adds connectivity for legacy sources, USB functionality, and premier streaming capability. Field upgradeable, the DSM adds SPDIF coaxial, optical, USB-B, RJ45, and Wi-Fi network inputs. For latency-free playback of high-resolution network content, 10\/100\/1000 Gigabit Ethernet is supported. \u003cbr\u003eTailored iOS apps facilitate effortless control of music collections, streaming content, and unit functions. Native integration with subscription streaming services like Tidal, Qobuz, and Spotify is supported within the app, with additional compatibility for Tidal Connect. Furthermore, with appropriately encoded files, standard MQA decoding is enabled. For users who prefer alternative music management, Roon Ready certification will also be available. \u003cbr\u003eCapable of handling today’s highest resolution sources, the DSM natively decodes PCM signals up to 32 bit\/384 kHz and DSD signals up to DSD256 (11.2 MHz). Often overlooked or downplayed, the analog section of a DAC significantly impacts the final sonic performance of digital music. Internal balanced connections carry the final analog signal directly to the input circuitry. From here, the analog music signal takes advantage of the entire power and analog circuitry within the Momentum C2 Preamplifier. \u003cbr\u003e\u003cbr\u003eAdvanced Control\u003cbr\u003e\u003cbr\u003eCreated with precision and elegance in mind, the Momentum C2 Preamplifier expresses a sleek and sophisticated design. The included bi-directional remote control, housed in precision-machined aluminum and Delrin®, offers intuitive control over unit functions and settings. With its ergonomic design and LED screen, the remote provides a seamless user experience, mirroring information from the preamplifier’s front panel display.\u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency Response: 0.1 Hz to 1MHz, -1dB \/ 20 kHz, ±0dB\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio: 100 dB, A-weighted\u003c\/li\u003e\n\u003cli\u003eGain: +10 dB\u003c\/li\u003e\n\u003cli\u003eFinish: Silver \/ Black\u003c\/li\u003e\n\u003cli\u003eTotal Harmonic Distortion: 0.0006%\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 1 MΩ\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: .05 Ω\u003c\/li\u003e\n\u003cli\u003eDistortion: \u0026lt;0.002%, 20 Hz to 20kHz\u003c\/li\u003e\n\u003cli\u003eOutputs: 2 balanced XLR stereo, 1\/4-inch headphone\u003c\/li\u003e\n\u003cli\u003eAnalog Inputs: 3 pr balanced XLR stereo; 1 pr unbalanced RCA stereo\u003c\/li\u003e\n\u003cli\u003eDigital Inputs (w\/DAC Module Installed): Optional Digital Streaming Module (DSM): 1 ea SPDIF coaxial; optical; USB-B; RJ45; Wi-Fi\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.0 x 8.9 x 15.2 \/ 43.2 x 22.6 x38.6 cm (w x h x d)\u003c\/li\u003e\n\u003cli\u003eWeight: 73.0 lb \/ 33.1kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Silver \/ Yes","offer_id":40842400104511,"sku":"","price":65000.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ No","offer_id":40842400137279,"sku":"","price":55000.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Yes","offer_id":40842400170047,"sku":"","price":65000.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ No","offer_id":40842400202815,"sku":"","price":55000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/files\/dag_momentumc4_1000x1000_0002_medres_original_MomentumC4-Product_4.jpg?v=1715871102"},{"product_id":"dagostino-momentum-z-monoblock-amplifier","title":"D'Agostino Momentum Z Monoblock Amplifier","description":"\u003cp\u003eThe new Momentum Z Monaural Amplifier marks the next stage in Dan D’Agostino Master Audio Systems relentless pursuit of musical perfection.\u003c\/p\u003e\n\u003c!-- TABS --\u003e\n\u003ch5\u003eOVERVIEW\u003c\/h5\u003e\n\u003cp\u003eIntroduced in celebration of the company’s fifteenth anniversary, it builds upon the core technologies that have defined our amplifiers—advanced circuit design, precision-machined enclosures, and extraordinary power delivery. The Momentum Z takes performance to an entirely new level of refinement and control. \u003cbr\u003e\u003cbr\u003eBorn from the same design philosophy that established the original Momentum series as a benchmark in high-end amplification, the Momentum Z generation advances every facet of the platform. Its unique power supply technology, the Kinetic Drive Regulator, keeps the amplifier immune to AC mains irregularities and the speaker interaction issues that commonly degrade the performance of conventional amplifier designs. \u003cbr\u003e\u003cbr\u003eIn addition to this proprietary innovation, every element of the Momentum Z has been reimagined, including the input stage topology, output stage circuitry, and an advanced software-based control system that optimizes the operation of every circuit group. Integrated within a newly refined thermal architecture, the Momentum Z delivers effortless dynamics, exceptional transparency, and a lifelike sense of musical scale.\u003c\/p\u003e\n\u003ch5\u003eFEATURES\u003c\/h5\u003e\n\u003cp\u003e\u003cb\u003eInput Stage Highlights\u003c\/b\u003e\u003cbr\u003eThe Momentum Z is the first D’Agostino amplifier to use a Junction Field-Effect Transistor (JFET) based input stage. At the very front end of an amplifier, where the delicate musical signal first enters the circuit, the choice of device is critical. JFETs excel in this role, offering ultra-high input impedance and exceptionally low noise, which together preserve every nuance of the source signal. From a technical standpoint, JFETs operate in a manner that provides a smooth, linear transfer characteristic with natural load handling. This design minimizes distortion and ensures that micro-level musical details are passed into the amplification stages intact, without being masked or colored. The benefits are immediately clear: a quieter background that reveals subtle spatial cues, a more natural midrange presence that brings vocals and acoustic instruments to life, and a sense of openness that enhances the soundstage. By using JFETs in the input stage, the amplifier achieves a rare balance of technical precision and musical warmth, allowing recordings to be experienced with both accuracy and emotional impact. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eInternet Connectivity\u003c\/b\u003e\u003cbr\u003eWith an integrated RJ45 Ethernet connection, the Momentum Z provides a glimpse into the performance and service parameters the software-based control system is optimizing. Through any web browser, users can view amplifier performance data including operating voltages, temperature, bias, DC offset, 12V trigger status, and more—all continuously monitored and displayed on connected devices via their home network. The same dashboard also provides control over front panel display settings for a personalized user experience. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eDesign\u003c\/b\u003e\u003cbr\u003eA defining hallmark of Dan D’Agostino Master Audio Momentum amplifiers is the distinctive use of solid copper heat sinks, a choice driven equally by engineering performance and visual impact. With nearly twice the thermal conductivity of aluminum, copper draws heat away from the output devices more quickly and uniformly. Immediately striking is the new, advanced 5-axis machined copper heat sink design, each formed from a single 42 lb (19 kg) slab of copper billet. The highly efficient elliptical geometry significantly enhances cooling performance, ensuring that Momentum Z operates safely and reliably even at full power. This exceptional thermal efficiency not only improves long-term reliability and longevity, but also maintains optimal operating conditions for the amplifier’s critical circuitry, preserving sonic stability under the most demanding loads. \u003cbr\u003eThe Momentum Z features a Dual Domain Meter Display designed to echo the elegance of the Swiss watch, inspired analog meters found throughout the D’Agostino product line. The first domain is digital: in place of a passive meter face, Momentum Z employs a 3.5-inch high-resolution LCD that serves as both a power meter and a message display. The second domain is analog, where - true to D’Agostino tradition, power is indicated by the iconic meter wand, a defining visual and functional element of D’Agostino power amplifiers. \u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eSPECIFICATIONS\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Output:\u003c\/strong\u003e 500 W @ 8 Ω \/ 1,000 W @ 4 Ω \/ 2,000 W @ 2 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 1 Hz – 200 kHz (–1 dB) \/ 20 Hz – 20 kHz (+0.1 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e \u0026gt;75 dB (A-weighted) \/ \u0026gt;115 dB (unweighted)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e 27 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion:\u003c\/strong\u003e 0.02% @ 1 kHz, 500 W @ 8 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 1 MΩ (Standard Input setting) \/ 300 Ω (Z Input setting)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Impedance:\u003c\/strong\u003e \u0026lt;0.05 Ω (20 Hz – 20 kHz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 190 V peak-to-peak\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e 60 A peak-to-peak\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e Standby 17 W \/ Idle 35 W \/ Maximum 2,000 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 1 × Balanced XLR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e 1 pair of binding posts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e 13.5 × 5 × 20.5 in \/ 32 × 13 × 54 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 100 lb \/ 45 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Silver or Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- \/TABS --\u003e","brand":"Dan D'Agostino Master Audio Systems","offers":[{"title":"Default Title","offer_id":42829116866623,"sku":null,"price":125000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/files\/dag__0001_MomentumZ-Front.jpg?v=1768264479"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/3334\/5087\/collections\/dagostino-relentless-banner-image.jpg?v=1581612135","url":"https:\/\/www.paragonsns.com\/collections\/dan-dagostino-master-audio-systems\/availability_availability-this-product-is-available-for-purchase-in-store-only-contact-us-for-more-information.oembed","provider":"Paragon Sight \u0026 Sound","version":"1.0","type":"link"}