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ARCDB
https://www.arcdb.ws/Database/ST70C3/ARC_ST70C3_manual.pdf
Audio Research Corporation ST-70-C3 Super Modification Kit Dynaco Stereo 70 Power Amplifier PRICE S4.W . NOISE L EFT ptop CHA smv p top 120 the Input S egent 830mv 175VDc for 22V Total a b3th POWER BANDWIDTH 25V RMS/'6n 2 ggw Ei +90uoc 90VDc Ei ther ovoc *IC5VDC +260VDc +100VDC +270voc +100VDC FREQ. RESPONSE AT 'WATT
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.
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 (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!
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.
Audio Research – High-end audio equipment
https://audioresearch.com/
Audio Research has produced some of the finest components for music reproduction; this is especially true with regard to preamplifiers. In 1973, the SP3 was hailed as the best preamplifier available, and this tradition of excellence has continued ever since. The Reference Series from Audio Research was first introduced in 1995 and has been the ...
The Dynaco ST-70 Series 3 Tube Amplifier is Now (Finally ...
https://www.audioshark.org/amplifiers-8/dynaco-st-70-series-3-tube-amplifier-now-finally-shipping-14307.html
I remember the Audio Research ST-70-C3 version of the St-70 , also there is one on Audiogon , also the Van Alstine version Ultravalve amplifier is the original Dynaco ST-70 I've heard that one and its very nice.
Audio Research (Special Dynakit) ST-70-C3 - Vintage …
https://www.ebay.com/itm/294716313990
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. They made 3 versions of this unit over the years and this is the latest and greatest 3C version.
Super rare Audio Research Corp Dyna Dynaco ST-70-C3 mod ...
https://www.ebay.co.uk/itm/265093260090
ARC’s design of the ST-70-C3 printed circuit board for the Dynaco ST-70 incorporates much of the patented cross-coupled driver technology used in ARC’s legendary D …
Service Repair – Audio Research
https://audioresearch.com/service-repair/
The Audio Research Service Department is available for warranty and non-warranty repairs on any new or vintage equipment with prior authorization. Please do not send in a unit for service without prior authorization. Contact your dealer or email [email protected] to receive authorization and to set up an RMA. When contacting the service ...
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