Vacuum tube audio amplifiers

One of the most comprehensive overview of high-end vacuum tube amplifier architectures was given by Electronics in 1955. In a six-page article the author, from General Dynamics Corporation, summarized most of the knowledge on the topic, also giving several diagrams of amplifiers from 11 to 100-watt.

I do not know if General Dynamics ever sold any audio gear, but the article could well be considered a milestone in the design of top audio amplifiers.

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