Previously Featured Builds

build

Herbert Fu

Herbert Fu

The Son of Zen is the most massive amplifier project I undertook. The result is really impressive. The performance of… More...
build

Kostas A. Vazakas(aono-p1)

Kostas A. Vazakas

After the construction of A 5 and L, I built the Pearl phono and finally the Ono. The sound of… More...

Amp Camp Project — Pass DIY / 2016

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A75 Part 1 — Norman Thagard & Nelson Pass / 1992

READERS' REQUESTS FOR more power are reasonable, but not interesting enough to justify another article. Hanging some output transistors on the original and beefing up the power supply is best left as an exercise to the reader. While the A75 delivers more power, particularly into low-impedance loads, that is not the primary goal of this project. We wish to introduce more advanced concepts in amplifier design, including balanced inputs, dual differential inputs, true DC response, cascode and folded cascode operation, tiered and regulated supplies, operation with and without feedback, and details of designing with the new generation of power MOSFETS.… More...

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