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Classic gear from yesteryear; vintage audio standing the test of time.

Re: Homebrew early 50's hi-fi

The amplifier could well be the Musician's Amplifier circuit published by Sarser and Sprinkle in Audio Engineering. At least it specifies the same tubes and OPT. As you surmised, it is a variation of the Williamson circuit using 807 tubes since KT66 tubes were not available at the time. A reprint of that and other circuits is available from the AudioXpress website in "Audio Anthology Vol. 1, When Audio Was Young.


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