STATUS - SOLD
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Description :
The Audio Research Reference 2 mkII with large soundstage, which is a sonic hallmark of Audio Research equipment. With amplifiers and speakers up to the task, the Reference Two Mk II will fill a space with sound that stretches from beyond the speakers right to left and as far forward and back as possible. While some preamps are good at lateral spread and others at soundstage depth, the Reference Two Mk II is proficient at both of these, though not because some part of the spectrum is emphasized.

Specifications :
Frequency response.......................+0 -3dB 0.5Hz to 60kHz at rated output.
Distortion.......................................Less than .015% at 2V RMS Balanced output.
Gain..............................................Main output: 18dB Balanced, 12dB Single Ended output. 
      ..............................................Tape output: 0dB. (Processor input: 0dB Balanced. 
      ..............................................Aux 1 input: 13dB Balanced.)
Input inpedance..............................132K ohms Balanced, 66K ohms SE,
Inputs (8).......................................tape, tuner, phono, CD, video, aux 1, aux 2,
             ........................................processor, (XLR and RCA connectors).
Output inpedance...........................400 ohms Balanced, 200 ohms SE main (2)
                         ............................20K ohms minimum load and 2000pF maximum capacitance.
Outputs (3)....................................2 main, 1 tape (XLR and RCA connectors).
Output polarity...............................Non inverting
Maximum input..............................14V RMS maximum Balanced, (7V RMS SE).
Rated outputs................................2V RMS (1V RMS SE) into 100K ohm
                    ................................balanced load (maximum balanced output capability is
                    ................................30V RMS at less than 0.5% THD at 1kHz).
Controls.......................................Gain (125 steps), Balance, Select Record, Select Input.
            ........................................Toggle switches: Power/Off, SE/Balanced Input,
            ........................................Invert/Normal, Mute/Operate.
Power supplies..............................Electronically regulated low and high voltage supplies.
                      ..............................Automatic 45 sec. warm-up/brown-out mute. Line
                      ..............................regulation better than .01%.
Noise............................................20uV RMS residual IHF weighted balanced noise output with gain control
       .............................................minimum (100dB below 2V RMS output, 97dB below 1V RMS SE output).
Tube complement.........................(6) 6H30 triodes; (1) 6L6; (1) 5AR4.
Power requirements......................100-135VAC 60Hz (200-270VAC 50/60Hz)
                             .....................130 watts maximum. (108W typical).
Weight..........................................31 lbs. (14.1 kg) Net; 44 lbs.
Dimensions(w x d x h)....................48 x 39.4 x 17.8 cm, Handles extend 3.8 cm forward of the front panel.

Miscellaneous :
Made in.........................................USA
Condition.......................................9 / 10 (Good condition)

Reviews :
http://www.soundstage.com/revequip/audioresearch_ref2mkii.htm
http://www.audioresearch.com/reference_2new.htm