• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

What is your opinion of Audio Research circuit designs?

I quite enjoy Audio Research equipment, especially their older stuff from the 80's. I like the build quality, and the detailed manuals and schematics. But, I don't have the technical knowhow to properly evaluate their circuit designs. I wondered if some of you smart people could share your thoughts on especially their tube and tube hybrid designs of the mid/late 80's.

(If there is a better forum for this question, let me know, this seemed as good as any)