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The GSPre is the nerve center of a system – not only directing signals and providing attenuation, but also interpreting and deciphering complex signals to create a musical story with the drama and intrigue befitting your favorite songs. The job of a preamplifier is to do its work discreetly, leaving the musical signal with as little signature as possible yet still unraveling the chapters that comprise the lyrical narratives of the source material. With decades of expertise creating some of the finest preamplifiers ever produced, the GSPre is certain to continue the legacy on which Audio Research has built its reputation.
The GSPre is both a line stage and phono stage, with programmable functionality and flexibility, making it the perfect solution to adapt and grow in your system. The phono stage is no mere afterthought, but a separate, vacuum tube-powered circuit providing enough gain for a variety of phono cartridges. When listening conditions require a more personal experience, the GSPre also has a headphone amplifier capable of driving a range of headphone impedances. The front panel layout is designed to simply and clearly display all functions and information, and integrates beautifully with the rest of the chassis and the G-Series amplifier.
OVERVIEW
Factory refurbished Audio Research GSPre Tube Stereo Preamplifier with Phono Stage in Silver finish. Audio Research has recently discontinued the GSPre.
Unit comes factory sealed and comes with a full factory warranty.
This product has been recently discontinued by Audio Research. Photos are stock images.
SPECIFICATIONS
- FREQUENCY RESPONSE: Line: ±0.3dB 2Hz to 80kHz, -3dB 0.8Hz to 220kHz. Phono: ±0.1dB of RIAA 10Hz to 20kHz, ±0.4dB 5Hz to 80kHz. Headphone: ±0.05dB 20Hz to 20kHz, -3dB 0.8Hz to 220kHz.
- DISTORTION (THD): Line: <0.002% at 2V RMS, Bal output. Phono: <0.005% at 3V RMS output, to Record output. Headphone: <0.009% at 1V RMS output.
- NOISE & HUM: Line:
- GAIN: Line: 13.8 dB, Processor: 0dB. Phono: 58dB @ 1kHz to Record output. Headphone: 11.3dB.
- INPUT IMPEDANCE: 150K ohms Balanced, 75K ohms SE; Phono impedance programmable (100, 200, 500, 1000 or 47K ohms w/200pF unbalanced)
- OUTPUT IMPEDANCE: 500 ohms Balanced, 250 ohms SE; <0.05 ohms Headphone SE
- OUTPUT POLARITY: n/a
- MAXIMUM INPUTS: Line: 12V RMS Balanced, 6.0V RMS SE. Phono: 11mV RMS at 1KHz.
- RATED OUTPUTS: Line: 2V RMS (1V RMS SE) into 200K ohms balanced load (maximum balanced output capability is 15V RMS at less than 0.5% THD+N at 1KHz.) Phono: 0.5V RMS into 200k load, Max output same as Line stage. Headphone: 6V RMS maximum into 30 ohms to 300 ohms load.
- POWER SUPPLIES: Electronically regulated low and high voltage supplies. Automatic 45 sec. warm-up & brownout mute. Line regulation better than .01%.
- TUBE COMPLEMENT: (6) 6H30P
- POWER REQUIREMENTS: 100-125VAC 60HZ (200-250VAC 50/60Hz) 105 Watts. Standby: 1.5 Watts.
- OTHER: Channel Separation @ 1kHz: Line: > 75dB Balanced output. Phono: >70dB to Record output. Headphone: >60dB. Signal to Noise Ratio @ 1kHz, A-weighted: Line: >125dB Balanced output. Phono: >94dB to Record output. Headphone: >110dB. Controls: Volume, Input Selector. 5 Push Buttons: Power, Mute, SPKR Off, Mono, Menu. Rear: RS-232 control, Remote IR input & Remote Trigger out.
- DIMENSIONS: Width 19” (483 mm). Height 7 ¾” (197 mm). Depth 17 ¼” (438 mm).
- WEIGHT: 25 lbs. (11.3 kg)
ADDITIONAL INFORMATION
Please call 734.662.3595 and ask for Richard if you have any questions about this product.
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