Audio Research Reference Two preamplifier Specifications

Sidebar 1: Specifications

Description: Remote-controlled, fully balanced, vacuum-tube preamplifier. Tube complement: eight 6922 dual-triodes; in power supply, one each 5AR4, 6L6GC, and 6922. Voltage Gain: 18dB balanced, 12dB single-ended. Frequency response: 0.5Hz-60kHz, +0/-3dB at rated output. Hum and noise: 20µV RMS residual IHF-weighted noise output with gain control set to its minimum (100dB below 2V RMS balanced output, 97dB below 1V RMS SE output). Distortion: <0.015% at 2V RMS balanced output. Output impedance: 400 ohms balanced, 200 ohms single-ended. Recommended load: 20k ohms minimum resistance and 2nF maximum capacitance. Input impedance: 132k ohms balanced, 66k ohms single-ended.
Dimensions: 19" W by 7" H by 15.5" D. Weight: 31 lbs.
Serial number of unit reviewed: 99490010.
Price: $9995. Approximate number of dealers: 60. Warranty: 3 years, parts & labor; 90 days, tubes.
Manufacturer: Audio Research Corporation, 3900 Annapolis Lane North, Plymouth, MN 55447-5447.Tel: (763) 577-9700. Fax: 763-577-0323. Web:

Audio Research
3900 Annapolis Lane North
Plymouth, MN 55447-5447
(763) 577-9700