Stereo Circlotron OTL Project

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


Circlotron Vacuum Tube OTL Prototype

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


Antique Tube Tester Restoration

I picked up an old PAC 954-G tube tester from a ham swap meet for $3. The previous owner couldn't speak...


All Tube 20 Watt Audio Amplifier

This power amp was an experiment in designing an all-vacuum tube circuit. We take transistors for granted...

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Ultralinear Single-Ended Desktop Power Amp

Desktop audio amplifier for paring with a PC. Intended for low-level music playback and computer sound...

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10 Watt Stereo Power Amp and Preamp

I started this project out of the need for a hifi stereo system capable of modest power output. I had...


Stereo 6DQ6B 50WPC Power Amplifier

Personal design project of a high powered stereo audio amplifier. The design is comprised of a custom...


Electronics Manufacturing Fundraiser

As president of the Technology Student Association at Old Tappan High School, I led an electronics manufacturing...