We have collected the most relevant information on Audio Research St 70 C-3. Open the URLs, which are collected below, and you will find all the info you are interested in.
Audio Research (Special Modified Dynakit) ST-70-C3 ...
https://skyfiaudio.com/products/audio-research-special-modified-dynakit-st-70-c3-vintage-tube-amplifier-w-vintage-ge-tubes
Super cool and rare upgraded Dynakit ST-70 tube amplifier modified by Audio Research. Dynakit sold these tube amplifier kits back in the early 1970's. Back in 1974 you could bring your beloved ST-70 amplifier to Audio Research and for $375 they would hot-rod it to work at its full potential! What could be better than a
Audio Research ST 70-C3 Dyna Rare Find Factory Built ...
https://www.audiogon.com/listings/audio-research-st-70-c3-dyna-rare-find-factory-built
Audio Research ST 70-C3 Dyna Rare Find for sale. Price lowered to $750.00 and accepting sane offers. Sounds better than any Dyna ST-70 of any pedigre selling up to $1000.00. It's a bargain considering how much stock ST-70's are going for! The ori...
Audio Research (Special Modified Dynakit) ST-70-C3 ...
https://www.audiogon.com/listings/lisaf240-audio-research-special-modified-dynakit-st-70-c3-vintage-tube-amplifier-w-vintage-g-amplifiers
Super cool and rare upgraded Dynakit ST-70 tube amplifier modified by Audio Research. Dynakit sold these tube amplifier kits back in the early 1970's. Back in 1974 you could bring your beloved ST-70 amplifier to Audio Research and for $375 they would hot-rod it to work at its full potential!
ARCDB
https://www.arcdb.ws/ST70C3/ST70C3.html
Description. The ST-70-C3 is a remake of Dynaco Stereo 70 reusing only the chassis and the transformers. The newsletter from July 29 1974 is announcing the release of the ST-70 factory rebuild, but that never actually happened. It was finally released as a kit through Old Colony Sound Lab (Audio Amateur's parts division) in 1977.
AUDIO RESEARCH ST-70-C3 stereo amplifier-RARE | Tube ...
https://www.audiogon.com/listings/tube-audio-research-st-70-c3-stereo-amplifier-rare-2014-03-26-amplifiers-20009-washington-dc
AUDIO RESEARCH ST-70-C3 stereo amplifier-RARE [Expired] Rare classic stereo amplifier by Audio Research. In current use. 35 wpc yet powerful, robust and warm sound on classical music, from soloist to full orchestra. Has been fitted with modern board, new electrolytics, speaker and terminals etc. two pair matched output tubes.
ARC ST70 Restoration - Analog Engineering Associates
http://aeaaudio.com/arc-st70-restoration/
Background. In their early years Audio Research built the ARC ST-70-C3 as a kit for the legendary Dynaco ST-70 and later as a factory mod. They completely did away with the factory Dynaco circuitry in the ST-70, using only the chassis and transformers from the original amplifier – the result was a stellar amplifier unique in tube amp history.
The Audio Research versions of the Dynaco ST-70
https://dynacotubeaudio.forumotion.com/t2677-the-audio-research-versions-of-the-dynaco-st-70
Audio Research had 3 versions of the Dynaco ST-70 that they put out during the early '70's - the C1, C2 and C3 (photos of each and a schematic of the C3 below). C1 below > The C1 used a tube rectifier with two OA2 voltage regulator tubes. The driver circuit used SIX driver tubes (three for each channel).
ST-70 | Audio Research | Shop & Research
https://www.audiogon.com/products/audio-research-st-70
Shop and research Audio Research ST-70 on the largest hi-fi marketplace: listings for sale, forum discussions, and systems featuring ST-70.
Audio Research ST-70 C3 Rare amp for sale | Tube | Audiogon
https://www.audiogon.com/listings/tube-audio-research-st-70-c3-rare-amp-for-sale-2013-04-24-amplifiers-12590
Audio Research ST-70 C3 Rare amp for sale [Expired] no longer for sale. Average. Research Pricing. These rare collectible amps don't come up for sale very often and I haven't seen one in this condition since I bought this one years ago. The chassis and cage are in perfect condition, the pcb has no burn marks on it, this in itself is rare.
Re: Using 6L6 on Dynaco ST-70 ? - Joe Rosen - Audio Asylum
https://www.audioasylum.com/messages/vintage/16181/re-using-6l6-on-dynaco-st-70
What Bill Johnson of ARC basically did was come up with a mod whereby you could convert a Dynaco ST70 into an Audio Research "D" series amplifier of somewhat lower power. The D-76 was a big, sloppy, thick & opaque bag'o'dirt, and the ST70-C-3 mod does pretty much the same thing to a Stereo 70.
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