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Audio Research

    https://audioresearch.com/wp-content/uploads/2021/06/D79_ManualPL.pdf
    The D79 amplifier was conceived in response ... Bias Adjustments (Sub-panel screwdri ver accessable) Input Connectors Level Control Knobs Fuses (Speaker Lines) ... Audio Research will then val idate the Warranty and return the validated Warranty to the purchaser. Conditions.

AUDIO RESEARCH D79

    https://www.audioantiquary.com/en-us/audio-research-d79-7533/
    Spectacular Audio Research power amp. In the opinion of many the best amplifier produced by AR and one of the best tube power amp ever. 75 watts per channel provided by a quartet of 6550 or KT88. The adjustment of the bias directly from the front panel allows perfect tuning. Completely overhauled, tubes in excellent condition.

D79B,D79C BiasAdjust - audio-circuit.dk

    https://audio-circuit.dk/downloads/audioresearch/AudioResearch-D79-pwr-adj.pdf
    bias adjustments, so recheck the first tube current after adjusting the other three, until you are certain that all are correct and stabilized. Select the desired tubes (V 15, V 16, V 17, V 18) with the Bias/ Operate switches and adjust at the corresponding control …

Audio Research D79C Amp - Audiogon Discussion Forum

    https://forum.audiogon.com/discussions/audio-research-d79c-amp
    Audio Research D79C Amp. Hello, Recently I acquired for $1800 an Audio Research D 79C amp in really excellent condition, I would say a 9 out of 10. It seems to have had very little use. I had it checked out by a really good technician and brought up to spec and it really sounds gorgeous. I am using it with an Audio Research Sp10 Mk II preamp ...

Audio Research D79 - Audiogon Discussion Forum

    https://forum.audiogon.com/discussions/audio-research-d79
    Audio Research D79 I just aquired a Audio Research D79 amp.Can any one tell me any history of the D79.I would like to know the years they where in production and the differances in the orgiginal,B,C and the C Mark2.Also what brand tubes sound best.My D79 is the first version.

Audio Research Ultimate Repair, Service Schematics ...

    https://www.ultimateservicemanuals.com/products/audio-research-ultimate-repair-service-schematics-operation-manuals-390-pdf-on-dvd
    390 Audio Research PDF files (Adobe Reader XI) on DVD R ... CA50 Bias Adjustment manual CA50 Owner Manual CA50 Schematics & Parts list manual ... D79 Owner Manual & Parts list D79 Schematics & Parts list manual D79B D79C Bias Adjustment manual

Audio Research Reference 75 power amplifier | …

    https://www.stereophile.com/content/audio-research-reference-75-power-amplifier
    The Ref 75 also sports a pair of VU meters, which give the amp a bit of the vibe of ARC's classic D79 amplifier, from the 1970s. These double as adjustment meters for biasing each of the four tubes individually. Setting bias was a snap (a bias adjustment tool is provided), and the settings remained very stable throughout my listening.

What Audio Research power amps have you owned or admired ...

    https://www.whatsbestforum.com/threads/what-audio-research-power-amps-have-you-owned-or-admired.143/
    This is THE place where audiophiles and audio companies discuss vintage, contemporary and new audio products, music servers, music streamers, computer audio, digital-to-analog converters, turntables, phono stages, cartridges, reel-to-reel tape machines, speakers, headphones and tube and solid-state amplification.

Audio Research D76A Amplifiers user reviews : 4.6 out of 5 ...

    http://www.audioreview.com/product/amplification/amplifiers/audio-research/d76a.html
    Five 6550s (four power and one bias regulator), 8- 6CG/FQ7 (drivers), and 4-12AX7s (phase splitters). With all those tubes and a very clean 75Wpc, the power supply and output iron HAS to be big. There are only two physical faults with this amp 1. Output connectors- its simply a screw terminal block for 4,8 and 16 ohms outputs with a ground ...

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).

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