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Audio Research SP11 MKII Preamplifiers user reviews : 5 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp11-mkii.html
This is one of the all time king of the hill preamp. If you're willing to spend over $10,000 for the ARC reference two then you should really listen to this SP-11 MK II. Many listeners don't realize the potential of this preamp with different mix of the 6922 tubes ( NOS ) and the different flavor of amps ( solid state or tube .)
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 SP-11 preamplifier – Old School | TONEAudio ...
https://www.tonepublications.com/old-school/audio-research-sp-11-preamplifier/
Audio Research SP-11 preamplifier. Residing at the top of the heap for at least three decades, Audio Research Corporation preamplifiers are almost default purchases for certain types of tube lovers. ARC preamps are adventurous in their technology yet conservative in execution, so they appeal to audiophiles who like to minimize risks.
Audio Research SP-11 MkII Stereo Tube Preamplifier; SP11 ...
https://tmraudio.com/components/preamplifiers/audio-research-sp-11-mkii-stereo-tube-preamplifier-sp11-mk2-new-tubes-parts/
Product: Audio Research SP-11 MkII Stereo Tube Preamplifier; SP11 Mk2 (New Tubes/Parts) Product SKU: 14889. Serial Number: 26034008. Voltage: 120V. Cosmetic Description: 8/10 Excellent condition with minimal visible cosmetic wear including a very small nick on the top edge of the faceplate. Outstanding condition overall - the condition will please even the most …
Audio Research SP-11 MK2 ... - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-sp-11-mk2
I owned an SP-11 mk II for a number of years. In its time it was one of the best preamplifiers available, and it gave me a lot of pleasure. It is still good, but I believe it to be surpassed by the better preamps out there now (I replaced it around 1990 with a Jadis JPL/Vendetta SCP-2B combination, as the tubed JPL was more to my liking and the Vendetta …
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, …
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