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Audio Research Sp-6a-Should it be modified?
https://forum.audiogon.com/discussions/audio-research-sp-6a-should-it-be-modified#:~:text=First%20of%20all%20SP6%20is%20a%20GOOD%20Pre-amp.,and%20change%20the%20caps%20%26%20resistor%20available%20today.
Is Audio Research SP-6 considered a good model?
https://forum.audiogon.com/discussions/is-audio-research-sp-6-considered-a-good-model
I use to own a SP-6A, SP-6B.ARC had other mods done on them with ARC SP-6C, 6E, i BELEIVE AS WELL.I had heard that a rare SP-6F was made which is actually a SP-8 in a SP-6 outer shell. The amps of the day that worked well with the SP …
Audio Research SP-6A - AudioCircle
https://www.audiocircle.com/index.php?topic=166676.0
Audio Research SP-6A. « on: 8 Dec 2019, 03:09 am ». For sale is vintage Audio Research SP-6A. tube preamplifier. I had a few of those preamps over the years and this is the best of them. It is unusual in the sense that it must be a transition or experimental model from A to B series since it employs additional power regulations modules but ...
ARCDB
https://arcdb.ws/SP6/SP6.html
SP-6A: 500 ohms main output, 1000 ohm tape output. Recommended minimum load for maximum audio quality 50K ohms and 500pF maxumum capacitance. SP-6B: Less than 500 ohms main output, 1000 ohms tape output.
Audio Research SP6 Tube Preamp - Kevin O
http://kevin.kevino.org/tubes/sp6.shtml
Obvious differences between the units is the much larger and more sophisticated power supply of the ARC SP6, and the more sophisticated topology used in the Audible Illusion's phono stage. The overall sound is fairly neutral with only a slight sense of warmth.
AUDIO RESEARCH SP6a
https://www.audioantiquary.com/en-us/audio-research-sp6a/
The device is sold with 6 Russian production tubes. If you want to make a significant leap in quality we can install a sextet of ECC83 original NOS Telefunken selected and coupled by us visible in the photo gallery. The price of the pre SP6a refers to the original valves, if you want the upgrade to the German valves 800.00 euros must be added.
Audio Research SP-6A - Singapore & Malaysia Hifi | Hifi ...
http://www.listeninn.com/product/407001-10509/Pre-Amplifier/Audio+Research+SP-6A
The Audio Research SP-6A is a tube stereo preamplifier introduced in 1978 with extremely revealing and detailed phono section. Front and rear panels are of two-color anodized aluminum construction for permanent finish and lettering, made of industrial grade components and construction for long service life.
Audio Research SP-6 High Definition Stereo Preamplifier ...
https://www.hifiengine.com/manual_library/audio-research/sp-6.shtml
Reviewed Jun 16th, 2020 by theaudiohiffle These (the 6 and 8 series preamps) put Audio Research into a ton of audiophile homes. These are somewhat overly warm but detailed preamplifiers that are wonderfully accurate on voices and most instruments. They are available on the used market at very affordable (by 2020 standards) of about $700.
The Vintage Beat: Audio Research SP-6B, Harmon Kardon ...
https://jeffsplace.positive-feedback.com/the-vintage-beat-audio-research-sp-6b-harmon-kardon-citation-1-and-mcintosh-mx110-preamplifiers/
It was rich, warm, relatively transparent, musical, and natural sounding, and very flattering to a wide variety of music. I would concur that its high-frequency performance was superb, being smooth and extremely natural sounding, and it has quickly become my favorite among the vintage preamplifiers I have heard to date.
Tube Preamp Reviews - Stereophile.com
https://www.stereophile.com/taxonomy/term-a/137
Audio Research Reference Two preamplifier. Audio Research's first 21st-century, audiophile-quality line-stage preamplifier combines retro-tech vacuum-tube amplification and power-supply circuitry with innovative, remote-controlled gain, balance, tape monitoring, and signal routing. The price is also 21st-century: $9995.
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