VSi-60

About the VSi-60

The Audio Research VSi-60 is a stereo integrated amplifier combining the warmth of vacuum tubes with modern control technology. It uses two matched pairs of 6550 output tubes and two 6H30 dual triode driver tubes per channel, operating in push-pull configuration with less than 7dB of negative feedback. The amplifier delivers 50 watts per channel continuous power from 20Hz to 20kHz, with a frequency response extending from 1Hz to 80kHz (-3dB points at 1 watt). It features a JFET input stage for improved performance and low distortion, with an input sensitivity of 0.47V RMS single-ended and input impedance of 50k ohms. The VSi-60 includes five single-ended RCA inputs (CD, Tuner, Video, SE1, SE2), a mono subwoofer output, and output taps for 4 and 8 ohm speakers. Control is via front panel buttons or an IR remote, with functions including volume, input selection, mute, mono/stereo, and power. The amplifier has an automatic 30-second warm-up mute and electronically regulated power supplies for stable operation. It measures 14" W x 8" H x 16" D, weighs approximately 35 pounds, and was originally The design emphasizes high-quality parts, hand-built construction, and a balance of tube warmth with modern convenience and reliability.