Previously Featured Builds

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kbt

kbt

This is my implementation of the A75. It was a fun project and the thing sounds great (and I can… More...
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Don Bingaman

Don Bingaman

After many a moon, I finally finished my Pearl. I added volume and balance controls, a moving coil step-up transformer,… More...

Zen Variations 6 — Nelson Pass / 2004

U.S. Patent # 5,376,899 describes an amplifying circuit topology that takes advantage of the character of matched balanced amplifiers that are cross-coupled to provide cancellation of distortion and noise. The result provides high performance with very simple linear circuits and has been dubbed Super-Symmetry, an homage to particle physics, and is also known popularly as the X circuit. Super-Symmetry works by exploiting the complementary characteristics of matched balanced circuits to differentially reject distortion and noise, and applies a small amount of feedback to extend this symmetry, making the distortion and noise even more identical on each half of a balanced… More...

Amp Camp Project — Pass DIY / 2016

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