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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 SP11 MKII Preamplifiers user reviews : 5 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp11-mkii.html
The SP-11 accepts 4 line-level inputs as well as one phono source. Six 6922 tubes are what you need to get this baby glowing and singing. The power supply box is of similar size to the control unit, but with only 2 toggle switiches and no knobs.
Audio Research SP-11 preamplifier Anthony H. …
https://www.stereophile.com/content/audio-research-sp-11-preamplifier-anthony-h-cordesman-november-1986
The Audio Research SP-10/II and SP-11 are obvious standards of reference in tube design, and the original and revised Motif MC-7 are good transistor standards of comparison. Bass: The Audio Research SP-11 has a notably different sound character [to the Convergent Audio SL-1]. While the revised Motif MC-7 is perhaps a bit too rich and warm in the transition area between bass and …
Audio Research SP-11 preamplifier
https://www.audioshark.org/industry-news-153/audio-research-sp-11-preamplifier-4003.html
391. 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. *They’re perfect for …
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