STATUS - SOLD
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Description :
The Audio Research SP3 was introduced in 1972 and was instrumental in establishing Audio Research's world-wide reputation for sonic excellence. Several thousand were sold during the period of 1972-1976 and most, we believe, are still in service today. The SP3 is a tube stereo preamplifier with incredible phono section, incredibly revealing and detailed. Great ergonomics and massive faceplate and general build.
Specifications :
Type..................................................Tube stereo preamplifier
Frequency response...........................±1dB 10Hz-30kHz, IHF load
............................±1dB of RIAA 30Hz-30kHz
Distortion (THD)..................................Harmonic distortion: Less than 0.005% at 5V RMS output, IHF load
...................................IM distortion: Less than 0.005% at 5V RMS output, IHF load, SMPTE method
Noise & hum......................................High level inputs (unweighted wide-band): more than 90dB below rated output
.......................................Magnetic phono inputs (below 10mV input) 20Hz to 20kHz: more than 70dB below rated outputs.
.......................................Power line components (hum): more than 66dB
Gain..................................................57dB, magnetic phono input, main outputs, IHF load
...................................................34dB, magnetic phono input, tape outputs, IHF load
...................................................23dB, high level inputs, main outputs, IHF load
...................................................0dB, high level input, tape outputs, IHF load
Input impedance.................................Magnetic Phono: 50K ohms typical (150 pf shunt)
..................................High Level: 100K ohms typical
Output impedance...............................Less than 600 ohms @ 1kHz (all outputs). Recommended load: 20K or greater
Maximum inputs.................................300mV RMS @ 1kHz (magnetic phono input). High level inputs overload proof.
Rated outputs.....................................Maximum output: 25V RMS @ 1kHz, all outputs
Tube complement................................2 x 12AX7 LN, 6 x 12AX7
Power requirements............................120/240V, 50/60Hz, 60 Watts
Other.................................................Tone controls: Bass and treble variable ±18dB at 10Hz and 15kHz respectively
Dimensions(w x d x h).........................15 5/8 x 12½ x 5½ inch
Weight...............................................14 lbs. Net.
Miscellaneous :
Made in.............................................USA
Condition...........................................7 / 10
Product information :
http://www.arcdb.ws/SP3/SP3.html
Reviews :
http://www.audioshopper.com/sp3.htm
http://www.stereophile.com/amplificationreviews/866/ |
