AUDIO RESEARCH SP-12 TUBE PREAMPLIFIER

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		$53.00
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AUDIO RESEARCH SP-12 TUBE PREAMPLIFIER You are bidding on a AUDIO RESEARCH SP-12 TUBE PREAMPLIFIER . Item works and looks great. It's in like new condition. There is no scratches or dents on the item. All switches and bottons are original and all working great. Nothing is missing on the item. The faceplate is undamaged, with all printing intact. The back panel has all original sockets, with no bending or damage to the socket boards. All tubes are working and all in great condition. There’s RIGHT & LEFT INPUTS: PHONO, TAPE, TUNER and AUX RIGHT OUTPUTS AND LEFT OUTPUTS: TAPE and MAIN. Comes with original boxes and original tubes. Specifications Frequency response High level section: ±.5dB, 4Hz to 30kHz. -3dB points below 1Hz and above 70kHz Magnetic phono: ±.25dB of RIAA, 30Hz to 20kHz Distortion (THD) Harmonic distortion: Less than .02% at 2V RMS output, 20Hz to 20kHz Intermodulation distortion: Less than .07% at 2V RMS output Noise & hum High level: (1) 250µV RMS maximum residual unweighted wide band noise at main output with gain control minimum (86dB below 5V RMS output) (2) More than 90dB below 1V RMS inout (less than 20µV equivalent input noise) Magnetic phono: 5µV maximum equivalent input noise, wideband RMS (-66dB reference 10mV input) (Less than 1µV above 200Hz or -80dB reference 10mV input) Gain Magnetic phono input to tape output: 34dB Magnetic phono input to main output: 60dB High level inputs to tape output: 0dB High level inputs to main output: 26dB Input impedance 50K ohms phono; 100K ohms high level Output impedance Less than 4000 ohms main output and tape output from phono. Recommended minimum load for maximum audio quality 60K ohms and 300 pF maximum capacitance. Output polarity Maximum inputs Magnetic phono, 600mV at 1kHz. (3V RMS at 10kHz) High level inputs essentially overload-proof. Rated outputs 2V RMS all outputs into 60K ohm loads (Main output capability is 50V RMS output at ½% THD at 1kHz into a 500K ohm load.) Power supplies Electronically-regulated solid-state supplies. Frequency-compensated high-voltage supplies have a total equivalent low-frequency stability of 1 farad of capacitance. Line regulation .05%. Tube complement (5) ECC88/6DJ8 dual triodes Power requirements 100-135VAC 60Hz (200-260VAC 50Hz) 30 watts max. Other Dimensions 15.6" (40 cm) W x 4.5" (11.4 cm) H x 8.9" (22.6 cm) D. Knobs extend .7" (1.8 cm) forward of front panel. Rear chassis fittings extend .9" (2.3 cm). Weight 9 lbs. (4.1 kg) Payment: Payment must be received in 4 days. If you do not pay with in 4 days, EBAY claim will be open. For the faster payment please use Paypal ONLY. WARRANTY AND RETURN: You have 3 days to return the item, if you get it damaged or none working. All returns must be ship with tracking# and insured. Buyer is responsible for the return shipping. Shipping: Boxing and shipping via Fed Ex ground to addresses in the USA continnental ONLY and shipping rate is rated to all 48 state, please do not ask for the lower shipping rate. Shipping is $45 ( NONE REFUNDABLE ) Local pick up is free and CASH only when you do pick up. Address must match Ebay and Paypal. ALL INTERNATIONAL BUYERS AND ALASKA AND HAWAII BUYERS must ask for the shipping rate before bidding.