At Paragon, McIntosh products are not just pictures on our website. As the only World of McIntosh Experience Center in North America, we proudly display all of these products in our showroom. Buy with confidence from a leading McIntosh brick and mortar/authorized online retailer. – Larry Marcus, President
The MA252 Integrated Amplifier is the first hybrid integrated amplifier from McIntosh. Taking retro design cues from the legendary McIntosh MC275 Vacuum Tube Amplifier, the MA252 combines the best of vacuum tube and solid state circuit design to create an amplifier that’s both visually and sonically stunning.
The preamplifier stage uses two 12AX7a and two 12AT7 vacuum tubes housed inside stylish protective cages; the output stage is a direct coupled solid state amplifier that delivers 100 Watts per channel into 8 Ohm speakers or 160 Watts per channel into 4 Ohm speakers. An all analog design, it comes with 2 unbalanced, 1 balanced and 1 Moving Magnet phono input for turntables. All 4 inputs can be given user-friendly names in order to simplify user control. Bass and treble tone controls help fine tune your music to your personal preferences. A full range subwoofer output is included for use with a powered subwoofer to further enhance low frequencies.
The MA252 features McIntosh Monogrammed Heatsinks™, which are connected to advanced high current output transistors. These transistors eliminate the typical amplifier warm-up time so that the MA252 is in peak operating condition from the moment it’s turned on. A powerful control microprocessor is used for smooth system operation, along with some of the latest audio-grade circuit components that deliver the best possible sound.
Thanks to its solid state output, the MA252 is McIntosh’s first product containing vacuum tubes to include their patented Power Guard® technology. Power Guard monitors the output signal for signs of over driving. It then makes real time micro-adjustments to the input signal to prevent harsh-sounding clipping that could potentially damage your speakers. If Power Guard is activated, the 2 vacuum tubes connected to the affected audio channel(s) will flash an amber color. They will return to their normal green color when the clipping has stopped.
Other McIntosh technologies found in the MA252 include Sentry Monitor™, High Drive headphone amplifier, and gold-plated speaker binding posts. Input selection, bass, treble, tone bypass, balance and input offset levels can be adjusted using the front panel knobs or the included remote control; all settings and input selection will be shown on the OLED display.
The entire unit sits atop a beautiful polished stainless steel chassis with a classic McIntosh-styled die cast aluminum name badge attached to each side.
Power Output Per Channel: 100 Watts into 8 Ohms; 160 Watts into 4 Ohms
Number of Channels: 2
Speaker Impedance: 4 or 8 Ohms
Rated Power Band: 20Hz to 20kHz
Total Harmonic Distortion: 0.03%
Dynamic Headroom: 1.8dB
Frequency Response, +0,-0.5dB: 20Hz to 20kHz
Frequency Response, +0, -3dB: 10Hz to 100kHz
Sensitivity Phono (Moving Coil / Moving Magnet): N/A / 3.0mV
Sensitivity High Level (Balanced / Unbalanced): 0.6V / 0.3Vv Sensitivity (Power Amp Input): N/A
Signal to Noise Ratio (Moving Coil / Moving Magnet): N/A / 80dB
Signal to Noise Ratio (High Level): 97dB
Signal to Noise Ratio (Power Amp Input): N/A
Input Impedance (Balanced / Unbalanced): 20K/20K
Damping Factor: 8 Ohms: >200; 4 Ohms: >100
Maximum Output (Balanced / Unbalanced): 8V Unbalanced
Balanced Input: 1
Unbalanced Input: 2
Phono Input (Moving Coil / Moving Magnet): 0 / 1 (fixed loading)
Upgradeable Digital Audio Module: No
Digital Coaxial Input: 0
Digital Optical Input: 0
Digital MCT (DIN) Input: 0
Digital USB Input: 0
Balanced Variable Input: 0
Unbalanced Fixed Output: 0
Unbalanced Variable Output: 0
Headphone Output: 1/4″ High Drive
Subwoofer Output: 1 (mono)
AM/FM Tuner Option: No
Home Theater Passthru: No
Unbalanced Analog Connector Type: Standard
Speaker Binding Post Type: Standard
Service Port: 0
Digital Audio Specifications
Tone Controls: Bass and Treble
Tone Bypass and Input Assign: Yes
RS232 Control Input: No
Power Control Output: 1
Rear Panel Data Port: 1
Rear Panel IR Sensor Input: No
Input Level Match: Yes
Output Autoformer: No
Output Meters: No
Dual Layer Chassis: Yes
Power Requirement: 120V 50/60Hz, 3.7A
Standby Power Requirement: <0.5 Watts
Dimensions (W X H X D): 12″ (30.5cm) x 7-5/8″ (19.4cm) x 18″ (45.7cm)
Weight: 28 lbs (12.7 kg); 37 lbs (16.8 kg)
Subject to the terms and conditions stated below, McIntosh Laboratory, Inc. (“McIntosh”) warrants to the original owner that this Product shall be free from defects in workmanship or materials for a term of three (3) years from the date when it was purchased from an Authorized McIntosh Dealer. Provided, however, that rather than the three (3) years of coverage afforded the Product generally, where applicable, vacuum tubes contained in our Products are warranted for 90 days from the date of purchase, hard disc drives and projector lamps contained in our Products are warranted for one (1) year from the date of purchase.
In the event of any defect covered by this Warranty, McIntosh shall without charge provide all parts, materials, and labor necessary to restore the Product to its original specifications. After repair, McIntosh shall return the Product to its owner at the owner’s expense. In the alternative, McIntosh may at its sole option either replace the Product without charge, or if replacement is not commercially practicable or repair or replacement cannot be accomplished within a reasonable time, McIntosh may refund the purchase price of the Product, subject where appropriate to reasonable depreciation for actual use in accordance with applicable laws, in full satisfaction of its warranty obligations. McIntosh or its Authorized Service Agency will undertake to complete the repair and return of the Product as soon as circumstances permit, unless prevented by causes beyond their reasonable control.
This Warranty does not cover any of the following: (a) glass panels, cabinetry, trim, or other appearance items (except where they are defective at the time of original sale and the Product is delivered for repair within the first thirty (30) days thereafter); (b) batteries, or damage to the Product caused by failure of batteries; (c) or damage to the Product caused by failure of projector lamp; (d) loss of, or damage or corruption to, digital data, files, or other information content of any kind, regardless of cause; (e) failures arising from accident, catastrophe, misuse, neglect, or failure to properly connect and operate the Product in accordance with the accompanying instructions; (f) failures arising from improper installation or removal of the Product; or (g) failures arising from any tampering, alteration, or damage to the Product or attempted servicing of the Product by anyone other than McIntosh or an Authorized McIntosh Service Agency; and McIntosh shall have no liability or obligation of any kind with respect to any of the foregoing types of failures.