Audio ResearchSP-8Audio Research SP-8 Hi Def Stereo Pre-AmplifierAudio Research SP-8 Hi Definition Stereo TUBE / Pre Amplifier with great sounding PHONO SECTION. S/N# 12221020 Color: Silver & Black Specifications SP-8 MKI: Frequency response...1295.00

Audio Research SP-8 Hi Def Stereo Pre-Amplifier [Expired]

no longer for sale

Audio Research SP-8 Hi Definition Stereo TUBE / Pre Amplifier with great sounding PHONO SECTION. S/N# 12221020 Color: Silver & Black Specifications SP-8 MKI: Frequency response High level section: ±.25dB, 5Hz to 30kHz. -3dB points below 1Hz and above 100kHz Magnetic phono: ±.25dB of RIAA, 30Hz to 40kHz Distortion (THD) Harmonic distortion: Less than .01% at 2V RMS output, 20Hz to 20kHz (Typically less than .0005% in midband) Intermodulation distortion: Less than .002% at 2V RMS output Noise & hum High level: (1) 250µV RMS maximum residual unweighted wideband noise at main output with gain control minimum (86dB below 5V RMS output) (2) More than 90dB below 1V RMS input (less than 20µV equivalent input noise) Magnetic phono: 5µV equivalent input noise, wideband RMS (-66dB reference 10mV input) (Approximately 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, all inputs (Magnetic phono may have any value from 10 ohms to 100K ohms substituted. Also has provision to add to the 40pF input capacitance for matching certain magnetic cartridges.) Output impedance 1000 ohms main output and tape output. Recommended minimum load for maximum audio quality 20K ohms and .001µF maximum capacitance. Output polarity Maximum inputs Magnetic phono, 900mV at 1kHz. (3.5V RMS, 10kHz) High level inputs essentially overload-proof. Rated outputs 2V RMS 5Hz to 30kHz, all outputs; 60K ohm load (main output capability is 60V RMS output at ½% THD at 1kHz into 100K ohm load with 3V RMS high level input) Power supplies Electronically-regulated supplies utilizing both vacuum tube and solid state elements. Line regulation better than .01% Tube complement SP-8 MKI: (2) 12AX7 LN, (3) 12AX7, (2) 6922, (1) 12BH7 SP-8 MKII: (2) 12AX7 LN, (2) 12AX7, (2) 6922, (1) 12AT7, (1) 12BH7 Power requirements 100-125VAC 60Hz (190-240VAC 50Hz) 60 Watts Other Dimensions 19" (48 cm) W x 5¼" (13.4 cm) H (standard rack panel) x 10¼" (26 cm) D. Handles extend 1 5/8" (4.1 cm) forward of front panel. Rear chassis fittings extend 7/8" (2.3 cm). Weight 22 lbs. (10 kg) Net: 30 lbs. (13.75 kg) Shipping It is BEST to call David with questions in Los Angeles Showroom 310-472-8880 or on my cell after hours and weekends West Coast time 10 - 10 at 310-927-2260. Weinhart Design has lots of other items new and used and if you're in Los Angeles or visiting please accept my invitation to experience our World Class Audio Showroom and please visit our web site @ We are always interested in purchasing quality Audio and Video items, CD & LP collections and most quality trades are welcomed. All sales out of California are State Sales Tax exempt. California State Sales Tax of 8.75% applies for items picked up or shipped to a California address. We accept payments by Bank Wire Transfers without fees and is the only form of payment on all sales out of the U.S. and Canada. We prefer this method of payment and also make shipping to addresses other than billing agreeable. VISA, MC and Papal are gladly accepted within the U.S. and Canada as long as the charge is approved and shipping to the billing address on record and adds 3% to cover costs. Please call me directly in my world class showroom in Los Angeles weekdays @ 310-472-8880 or any reasonable time on my cell including weekends @ 310-927-2260 and I can answer your questions and help you with all of your new and pre owned needs.
Seller Information

Weinhart Design  Verified Dealer

Last 12 months

Member since February 2006