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Audio Research SP-12
https://www.qaudio.com/products/audio-research-sp-12
749.00. Audio Research SP 12RM (Rack Mount) tube stereo preamplifier. Specifications. Frequency response High level section: ±.5dB, 4Hz to 30kHz. -3dB points below 1Hz and above 70kHz. Magnetic phono: ±.25dB of RIAA, 30Hz to 20kHz. Distortion (THD)Harmonic distortion: Less than .02% at 2V RMS output, 20Hz to 20kHz.
stereonomono - Hi Fi Compendium: Audio Research SP-12 ...
https://stereonomono.blogspot.com/2020/10/audio-research-sp-12-preamplifier.html
Audio Research Preamplifier. The SP-12 is a musically accurate, High Definition wide bandwidth, vacuum tube preamplifier offering the serious music enthusiast uncompromised performance. With proper attention to set up the SP-12 can be placed in virtually any quality audio system, from the least costly to the most sophisticated without compromise in system performance.
audio research sp-12 anyone? | Audiokarma Home Audio ...
https://audiokarma.org/forums/index.php?threads/audio-research-sp-12-anyone.122931/
Audio Research SP12 legaleagel, The Audio Research SP12 was the contemporary of the SP8 and SP10, and was their "budget" preamplifier- I think it was about $800 less than an SP8- that's over 1/3 less-a significant proportion. It was also, with the SP10, the first 6DJ8 based Audio Research preamp.
ARCDB
https://www.arcdb.ws/SP12/SP12.html
sp12 The Audio Research Database - ARCDB - is a tribute to Audio Research Corporation (ARC) for their tremendous contributions to the world of high end audio. About
AUDIO-RESEARCH SP12 PREAMPLIFIER Service Manual …
https://elektrotanya.com/audio-research_sp12_preamplifier.pdf/download.html
SP-12 SP12 SP 12 AUDIO RESEARCH; If you have any question about repairing write your question to the Message board. For this no need registration. Please take a look at the below related repair forum topics. May be help you to repair.
Audio Research SP-12 For Sale - Canuck Audio Mart
https://www.canuckaudiomart.com/details/649639316-audio-research-sp-12/
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 SP-11 preamplifier | Stereophile.com
https://www.stereophile.com/tubepreamps/898/index.html
If there is indeed a renaissance of tubes in high-end audio—and it is clear there is—much of the blame lies with Audio Research Corporation. Audio Research president William Johnson was custom-building tubed power amplifiers for the carriage trade as far back as 1951, which means he has been making tubed equipment for longer than anyone else currently in …
Audio Research SP-9 Preamplifier – Old School | TONEAudio ...
https://www.tonepublications.com/old-school/audio-research-sp-9-preamplifier/
Audio Research obviously knew it was on to something, later offering Mk II and Mk III upgrades, costing $1,795 and $2,495 when discontinued in 1996. With each, there were wiring changes, power supply upgrades and better circuit boards to improve low level distortion and better grounding. Throughout these revisions, the SP-9 continued to be one ...
Audio Research SP14 preamplifier | Stereophile.com
https://www.stereophile.com/content/audio-research-sp14-preamplifier
The name "Audio Research" will be familiar to many readers of this magazine. It belongs on the list of that select group of manufacturers who continue to offer the audiophile and music lover equipment which enables him or her to truly enjoy the muse. With equipment of this caliber, one is no longer caught up in the anxiety-inducing process of listening to (evaluating) …
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