Stereo Circlotron OTL Project

This stereo OTL tube amplifier project is a continuation of my experiments with the circlotron output...

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Circlotron Vacuum Tube OTL Prototype

Vacuum tube audio amplifiers almost invariably use specialized output transformers to match the naturally...

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Single Ended Amp Conversion

I picked up an old tube-based laboratory bandpass filter that was discarded. The challenge in this project...

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6DQ6B Vacuum Tube Guitar Amplifier

A "Junk-box Build" vacuum tube guitar amplifier. I slapped this amp together using only parts I had...

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