Previously Featured Builds

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Gerben Poorter

Gerben Poorter

Some information on the parts: Supply: 1000 VA/2x42 Vac Amplimo toroid (yields a slightly low 2x 57 Vdc after rectification)… More...
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Helsingor

Helsingor

Attached please find photos of my unbalanced version of the Zen Line Stage. My Zen preamp turned out to be… More...

Amp Camp Project — Pass DIY / 2016

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Bride of Zen — Nelson Pass / 1994

This is the second installment of a trilogy of construction projects centered around the performance obtainable from absolutely minimalist circuitry. Part one described the Zen amplifier, a 10 watt single-ended class A power amplifier using a single MOSFET gain stage. In this piece we will examine its preamplifying mate, also a single gain stage MOSFET circuit. A lot of what I might say about this design has already been expressed in the Zen amplifier piece, and will not be repeated here. It is enough to say that I continue to be very intrigued by the sound of very simple topologies,… More...

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