Previously Featured Builds

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Seungyun Lee

Seungyun Lee

The Son of Zen was very interesting amplifier and has a lot of attractions for me. Especially, I liked pure… More...
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Rune Braendaas

Rune Braendaas

I build the amplifiers like an "open" construction, to loose as much heat as possible, without using any noisy fans.… More...

Current Source Crossover Filters — Nelson Pass / 2004

In today’s marketplace, audio power amplifiers are conventionally viewed as voltage sources, delivering a given voltage at the output that is a multiple of an input voltage. To the extent that they are truly voltage sources, having a very low output impedance, they simply deliver whatever current happens to reflect the response of the loudspeaker to the defined output voltage. Recently I have been playing with current source power amplifiers that have high output impedances and deliver a specific current to the load in response to an input voltage. The voltage across the loudspeaker reflects its response to this defined… More...

Amp Camp Project — Pass DIY / 2016

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