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People seemed to enjoy my last tube amplifier measurements post, so I decided to do another. I modded this stereo Magnavox 8605 console amplifier to run 12BH7 dual triodes as output tubes, converting it from a single-ended pentode to a single-ended triode (SET) amplifier. I used a schematic by...

Hello everyone, I am a vintage audio enthusiast who enjoys designing, modifying, and repairing tube amplifiers. I'm also an objectivist and a long-time reader of ASR, but I've always wished there was more tube-related objectivist content on this forum. As we all know, tube amplifiers are far...