FOR SALE: Audio Research SP-9 MKlll Hybrid Tube Preamp w/ MM-Phono-Stage
Item #649381519Info: Audio Research SP-9 MKlll Hybrid Tube Preamp w/ MM-Phono-Stage
||13.61 (kg) Calculate Shipping
||91.44cm x 91.44cm x 25.40cm
||8 - Very good (?)
Sep 26, 17 7:45pm (PST)
Edited: Sep 29, 17 5:57pm
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||Audio Research Corporation
|Days in System:||25|
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This is it, an all original MKIII, not an upgraded MKI or MKII.
Condition is excellent and comes in the original box.
Buyer would have to pay for the shipping costs. Prefer cashier's check.
Free Pick up in CA, Orange County area.
SP9 MKIII Specifications:
Frequency response High Level Section: ±.5dB, 5 Hz to 50 kHz, - 3dB points below 1 Hz and above 200kHz.
Phono: ±.3dB of RIAA, 30Hz to 40kHz.
Distortion (THD) Less than 0.1% at 2V RMS output. (Typically less than 0.005% in midband)
(SP-9: < .01% @ 2V RMS output 10Hz to 30kHz )
Noise & hum High Level: (1) 70 µV RMS maximum residual unweighted wideband noise at main output with gain control minimum (98 dB below 5V RMS output). (2) More than 100dB below 1 V RMS input (less than 7µV equivalent input noise)
(SP-9: Phono IHF weighted 72 dB below 1 mV input)
Phono: 0.12 µV equivalent input noise; IHF weighted, shorted input (78dB below 1 mV input).
Gain Phono input to tape output: 46dB
Phono input to main output: 67dB (SP-9: Phono 66dB (RIAA ±.25 dB)
High level inputs to tape output: 0dB
High level inputs to main output: 21dB
CD input to main output: 9 dB
Input impedance 50 k ohms line inputs
47 K phono (Phono provisions for any value below 47K ohms or added input capacitance for matching certain magnetic cartridges)
Output impedance 250 ohms main output
850 ohms recorder output
Recommended load 60K ohms and 100pF. (20K ohms minimum)
Maximum inputs Phono, 200 mv at 1kHz (1000 mv RMS, 10kHz)
High level inputs essentially overload proof
Rated outputs 2 V RMS 5 kHz to 50 kHz, all out-puts; 60k ohm load (main output capability is 50 V RMS output at 0.5% THD at 1 kHz into a 100K ohm load with 5V RMS high level input)
Power supplies Electronically-regulated low and high voltage supplies and electronic decoupling. Shielded toroid transformer. Line Regulation better than .01%.
Tube complement (2) 6922
Power requirements 100-135 VAC 60 Hz (200-270 VAC 50/60Hz) 55 watts max
Dimensions 19" (48 cm) W x 5 1/4" (13.4 cm) H (standard rack panel) x 10 ¼" (26 cm) D. Handles extend 1 ½" (3.8 cm) forward of the front panel. Rear chassis fittings extend 7/8" (2.3 cm).
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