Audio Research is one of the most dependable brand names when it comes to high-end audio systems. For years the brand has been recognized by audiophiles throughout the world as equipment that delivers clear and consistent quality in music.

What are the specs for the Audio Research GSPre?

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.
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: <-101dBV volume at max. Phono: <-77dBV to Record output. Headphone: <-88dBV volume at max.
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 :
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.
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.
Width 19” (483 mm). Height 7 ¾” (197 mm). Depth 17 ¼” (438 mm).
25 lbs. (11.3 kg)

What else to know about the Audio Research GSPre?

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 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 discretely, 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. • Stereo Vacuum tube Line and Phono preamplifier with Headphone amplifier in one attractive package. • Pure Class-A differential amplifiers in the Line stages, no feedback. • Pure Class-A SE amplifiers in the Phono stages, no feedback. • VF display with Blue LED's for Phono Loads and mode selected, and rotating Volume & Input Select encoder. • Hand held IR Remote and RS-232 and remote IR inputs for whole home audio system. • Balance and SE input/output. • 7 levels of voltage regulation and a low noise R-core power transformer. • Phono stage features low noise JFET inputs and 6H30 outputs as well as programmable loading. • Line stage features low noise JFET inputs and 2 parallel 6H30 outputs. • Features custom designed coupling capacitors in the line and phono stages. • +12v trigger output to turn on power amplifier and other system components. • Low distortion vacuum tube headphone amplifier designed for driving a wide impedance range, 30-300 ohms. • Removable 15A IEC power cord. \[From the ARC website]

Brief History of Audio Research

Other Audio Research Products We Often Buy

Typically, StereoBuyers purchases mostly used amplifiers, especially the vintage amps and high-end Audio Research models.

StereoBuyers has purchased tens of thousands worth Audio Research brand equipment since 2014, with individual buys ranging from $100 to well over $50,000. If you are moving, ready to upgrade, or have Audio Research equipment you do not or will not be using, why not contact us today to find out if it is worth good money?

If you are interested in selling your used Audio Research equipment to us in the greater NYC area or Colorado, please click here to fill out a Free Quote Form and we will get back to you. If we agree on terms, we come to meet you where you want, and pay cash.

The following images show actual Audio Research equipment purchased by StereoBuyers.