Previously Featured Builds

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user95

user95

Dear Nelson, Enclosed are some pictures of my latest project: The ZEN amp an the BOZ preamp. The only tweak… More...
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Bernt Jansson

Brent Jansson

But the reason I write you is because in the evenings recently I have built a few of your projects… 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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