STATUS - SOLD
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Description :
The SP-10 is considered the best pre-amplifier Audio Research has ever built in the 1980's. Utilising as many as 15 tubes, the SP-10 is a two-chassis tube stereo preamplifier that is introduced in 1982. It had a incredible phono section with incredibly revealing and detailed. Great ergonomics and massive faceplate and general build.

Specifications :
Distortion (THD)....................................< .01% @ 2V RMS output
Noise & hum High level..........................Phono: 88 dB below 10 mV input RIAA weighted
Gain.....................................................Phono: 72 dB (RIAA ±.25 dB, 20Hz to 40kHz)
      ......................................................Line: 26dB (± .25 dB 5Hz to 30kHz)
Tube complement..................................4 x 6922 LN,
                         ...................................8 x 6922,
                         ...................................2 x 5881,
                         ...................................1 x 12AT7
Dimensions(w x d x h)...........................48.5 x 32 x 14 cm (Power supply) 
Dimensions(w x d x h)...........................48.5 x 32 x 14 cm (Main unit) 
Weight.................................................22 kg

Miscellaneous :
Made in...............................................USA
Condition.............................................8 / 10 (Decent condition)

Product information :
http://www.arcdb.ws/SP10/SP10.html