Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

When released, Audio Research’s SP11 was their flagship, 2-chassis preamplifier. It garnered praise for its exceptional ability to reveal musical passages with haunting realness. This is partly due to its being extremely silent in operation. This is a beautiful foundation of a hi-end vintage system. Both units were serviced and all controls cleaned by our veteran amplifier tech. The phono stage is also excellent and allows for a nice range of loading for a variety of cartridges. I particularly enjoyed this statement in a review in Stereophile, First, it must be said that the SP-11, more even than most other preamps, does not like a cold start. After 15 minutes warmup, it sounds very good. After an hour it starts to pull ahead, sonically, of any of its known competition. After two hours, it is head and shoulders better than anything I have ever heard! SP11 / SP11PS FEATURES -Hybrid stereo preamplifier with phono stagePower supply in seperate chassis for silent operationSelectable phono loadingSelectable filtersPrecision Japaneese attenuator and selector potsDirect Mode PREAMPLIFIER SPECIFICATIONS -CLASS - Hybrid Stereo w/ (6) 6DJ8 TubesFREQUENCY RESPONSE - 0.2Hz to 100kHzHARMONIC DISTORTION - Less than 0.005%NOISE AND HUM - 110dBINPUT IMPEDANCE - Phono selectable 47k, 100, 30, 10, 3 OhmsOTHER FEATURES - Filter: 25Hz Hi-pass phono subsonic 6dB/octave rolloff (to eliminate ringing) with transition to 12dB/octave at 10Hz. Front panel switchable phono only. Controls (6): Gain, Level (to set gain range), Balance, Mode, Input, Impedance. Switches (8): Tape monitor, Copy, Tape 1/2, Tape 1to2 / 2to1, Mute, Invert phase, Bypass, Filter.OUTPUT IMPEDANCE - 250 Ohms MainDIMENSIONS - (LxWxH) 10.25 x 19 x 5.25 - SP11PS is the same sizeWEIGHT: 29 lbs (with power supply) IN THE BOX -SP 11 PreamplifierSP11PS Power SupplyPower and power supply connection cables CONDITION - All pieces were well cared for by the original owner and are clean and dust free. No sign of smoke, pets or kids. Both faces are scratch free and amazingly there are no dings on the corners or edges..a rare find. SHIPPING - We ship worldwide with UPS, Fed-Ex and various truck freight lines. All items are packed and padded with care if the original packaging is deemed insufficient. We know how exciting it is to anticipate the arrival of new gear and we want your item to arrive in the same condition it left our facility.

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

This is an Audio Research SP-11PS, power supply unit for the SP-11 Preamp.Item is untested, sold as not working unit. I will ship worldwide.