Audio Research REF 150 Amplifier

I am the original owner of this amp.  I bought it new from an authorized dealer.  I have owned the amp for 1 year, and it has only 400 hours on it.  It is not broken in yet.  Runs perfectly, no defects of any kind.  The amp has a Black front plate.  This amp has the power to drive almost all speakers.  I am presently using it to drive Magico Q3 speakers, and I typically have to only set the volume on my preamp to the 34 out of 100 mark.  The new KT120 tubes are marvelous.  Buy with confidence; check my perfect feedback.  Buyer will pay the 3 per cent Paypal fee.

Description: Tubed stereo power amplifier. Tube complement: eight KT120 (matched pairs, output), four 6H30 (driver). Input: Balanced, pin 2+ (IEC-268). Output taps: 16, 8, 4 ohms. Power output: 150Wpc (21.75dBW) continuous, 20Hz–20kHz into matched load. Approximate actual power available at clipping: 160W. Power bandwidth: 5Hz–80kHz, –3dB. Frequency response: 0.5Hz–120kHz, –3dB at 1W. THD at 1kHz: typically 0.6% at 150W, <0.03% at 1W. Input sensitivity: 2.0V RMS for rated output, Voltage gain: 24dB into 8 ohms. Input impedance: 300k ohms, balanced. Output polarity: non-inverting. Output regulation: approx. 0.6dB 16 ohm load to open circuit (damping factor: approx. 14). Overall negative feedback: 14dB. Slew rate: 13V/µs. Risetime: 2.0µs. Hum and noise: <0.1mV RMS, 114dB below rated output (IHF weighted, input shorted). Power-supply energy storage: approx. 1040 joules. Power requirements: 105–125VAC, 60Hz (210–250VAC, 50Hz), 730W at rated output, 900W maximum, 420W idle.
Dimensions: 19" (483mm) W by 8.75" (222mm) H by 19.5" (495mm) D. Front-panel handles extend 1.5" (38mm). Weight: 75 lbs (34.2kg) net, 90 lbs (41kg) shipping.