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Audio Research SP4 Preamplifiers user reviews : 5 out of 5 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp4.html#:~:text=That%20said%2C%20the%20SP4%20sounds%20amazingly%20good.%20It,is%20clearly%20more%20musical%2C%20and%20just%20better%20overall.
A Tune-up for the Audio Research SP-4/4A Preamp
http://conradhoffman.com/SP4A_caps.htm
A Tune-up for the Audio Research SP-4/4A Preamp. Introduction. The ARC SP-4 preamp was ARCs first solid state preamp. It was controversial at the time and some say it almost destroyed the company. Opinions about the sound quality …
Audio Research SP4 Preamplifiers user reviews : 5 out of 5 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp4.html
5. ★★★★★. ★★★★★. [Dec 28, 2012] AudioBuff. Audio Enthusiast. I got a steal on this pristine condition ARC SP4 while shopping for a sub $500 option as a backup preamp. Not having experienced any ARC products before, I was completely amazed at the build quality, fit and finish considering that this was a product from the 70s.
Audio Research SP 4 | Solid state | Audiogon
https://www.audiogon.com/listings/lis9e745-audio-research-sp-4-solid-state
Audio Research SP-4a for sale. This is a classic solid state Audio Research SP4 A pre-amplifier with the rare MCP-1 active head amp for MC cartridges and rare ARC original wooden case. This is a very clean and complete unit.I pu...
Audio Research SP-4 Stereo Pre Amplifier Manual | HiFi Engine
https://www.hifiengine.com/manual_library/audio-research/sp-4.shtml
The SP-4 preamplifier was designed around the Analog Module which acts as a 'super tube' because it takes the best qualities we see in the vacuum tube much closer to the theoretical ideal. The SP-4 surpasses our vacuum tube preamplifier in the most important areas. It has increased musical depth and definition with a smoothness that will ...
Audio Research SP9 MKII Preamplifiers user reviews : 4.6 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp9-mkii.html
The preamplifier has kept up with the continuing improvemenst in the rest of the system. The SP 9 mk II is a sensible choice, especially given the low prices on the 2nd (or 3rd) hand market. NAD 1020, Copland 301, Music Reference RM 5, ARC LS2B, ARC LS3B, QUAD 405-2, Futtermann OTL amplifier, ARC VT 100 mkII.
Audio Research SP9 preamplifier | Stereophile.com
https://www.stereophile.com/tubepreamps/739/index.html
Following the introduction of their very expensive, tube/FET hybrid SP11 preamplifier, there were rumors that Audio Research was working on a hybrid tube/transistor preamplifier targeted to cost less than $2000. The rumors were confirmed when ARC showed a black-and-white photo of the SP9 at the 1987 Winter CES. Obviously, like all magazines, we …
The best sounding Audio Research Line Stage preamp
https://forum.audiogon.com/discussions/the-best-sounding-audio-research-line-stage-preamp
The LS2B MkII, LS3B, LS5 MkII, LS12, LS16 MkII, LS22, and the LS25MkII. Thank you for all your help. If you're looking for the one that has the best of the tube-like qualities, go with the LS5. The rest of them, save the 16 and the 25, are far more solid-state like in character. I personally think the LS5 is the best of the line stages ARC has ...
Audio Research SP20 preamplifier | Stereophile.com
https://www.stereophile.com/content/audio-research-sp20-preamplifier
I asked Audio Research's head of marketing, Dave Gordon, how he felt the SP20's phono stage compares with ARC's separate phono and line-stage models. He said that he felt the SP20's phono stage provides the same amount of gain as and is comparable in sound quality to that of the PH8 ($7000), but is a different circuit design.
ARCDB
https://www.arcdb.ws/SP4/SP4.html
sp-4a 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
PreAmplifiers Reviews – Audio Research
https://audioresearch.com/preamplifiers-reviews/
The Audio Beat REF6SE Review. Stereophile October 2020 Review. REF6. The Audio Bea t REF6 Review. REF5SE. The Audio Beat REF5SE Review. REF10. HI-FI+ August 2021 Review. Much more than a mere carriage-trade brand name, the Audio Research marque has come to represent stellar performance and lasting value for music lovers and audio …
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