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Audio Research SP11 MKII Preamplifiers user reviews : 5 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp11-mkii.html
Audio Research SP11 MKII Preamplifiers . DESCRIPTION 2 chassis hybrid full-function pre-amp. USER REVIEWS . Showing 1-7 of 7 [Apr 22, 2010] stevo58. AudioPhile.
Audio Research SP-11 MK2 ... - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-sp-11-mk2
Wow! that was really interesting. Before I purchased my REF 3, I retubed my SP-11 MKII with AR supplied tubes and I have to tell you I with several of my friends over about a week compared my borrowed REF 3 (dealer demo) with the retubed SP11 MKII and several other borrowed pre-amps from the dealer, including other AR pre-amps and the re-tubed SP11 MK II …
Audio Research SP11 MKII | Tube | Audiogon
https://www.audiogon.com/listings/audio-research-sp11-mkii
Research Pricing. This is the SP11 MKII version. It is in two parts, the control center and separate power supply. This pre amp sold for an astounding $5995.00 back in 1987!!! Wow could you imagine what something like this would sell for new today!
Audio Research SP-11 mkII | Tube | Audiogon
https://www.audiogon.com/listings/lisaei1d-audio-research-sp-11-mkii-tube
Audio Research SP-11 mkII for sale. My uncle got from local owner over 20 year ago !! Unit have very little used !! All circuits board still look clean white !! Not discoloration like the one with many hours few scratches can be find...
Audio Research SP-11 MkII - Stunning: Nearly Time-Capsule ...
https://www.audioasylumtrader.com/ca/listing/Preamplifier-Tube/Audio-Research/SP-11-MkII/Stunning-Nearly-Time-Capsule-Cosmetic-amp-Working-Condition/210877
Within its two chassis, the SP-11 contains a robust, triple regulated(!) power supply worthy of any medium size amp, a linestage with 200kHz bandwidth built around William Johnson's patented hybrid gain block (consisting of a triode as the load for a unity gain source-follower P channel JFET in a cascode-like circuit), and a hybrid four stage phono section with up to 76dB of gain, …
ARCDB
https://arcdb.ws/SP11/SP11.html
SP-11 MKII Special Edition The Audio Research Database - ARCDB - is a tribute to Audio Research Corporation (ARC) for their tremendous contributions to the …
Audio Research SP-11 preamplifier – Old School | TONEAudio ...
https://www.tonepublications.com/old-school/audio-research-sp-11-preamplifier/
When the SP-11 in Mk II form reached the end of its production, the retail price had only ascended to $5,995. Dave also noted, “I think it was pretty unusual to see a tube preamp with a phono bandwidth of 100k and a linestage bandwidth of over 200k in 1985.”. Hear, hear. -Ken Kessler.
Audio Research SP-11 preamplifier | Stereophile.com
https://www.stereophile.com/tubepreamps/898/index.html
The SP-11 is a design departure for Audio Research. Like the Berning TF-10 , it is neither a tube nor a solid-state preamp; rather, it is both at once. Each active stage is a combination of a triode tube and a FET—devices whose dynamic transfer (input/output) characteristics just happen to be very close to complementary.
Audio Research – High-end audio equipment
https://audioresearch.com/
Audio Research continues its dedication to unparalleled musical expression and crafting components of the highest quality and lasting value for its customers. Our long-term dedication to service is peerless in this industry (Audio Research, with few exceptions, can repair anything ever produced during its entire history).
Audio Research SP11 MKII For Sale - Canuck Audio Mart
https://www.canuckaudiomart.com/details/649683245-audio-research-sp11-mkii/
Classifieds: FOR SALE - Audio Research SP11 MKII asking for $3800.00
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