Previously Featured Builds

build

Robert(a75-p12)

Robert

It is not too exciting to look at, but maybe the story of its construction is worth reading. I built… More...
build

Julian Evetts

Julian Evetts

I think the original idea for the ‘wall amp’ was to present the A-75 as an ‘instrument,’ something that looked… More...

Zen Variations 3 — Nelson Pass / 2002

In Part 2 we developed a new active current source for the Zen amplifier. In this part, we create a power supply regulator suitable for the Zen amplifier projects. Previous versions of the Zen amplifiers had no power supply regulation at all, or used capacitor/inductor/capacitor "pi" filters to smooth the ripple on the DC supply lines. In keeping with our philosophy of simple-aspossible, we want to develop a supply regulation system which gives us good regulation, with low AC noise and a stable DC value. The need for a good regulator is obvious enough. As simple as they are, the… More...

Amp Camp Project — Pass DIY / 2016

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