Re: The Audiophoolery Thread.
The extremely quirky Richard Dunn, who was the one man band behind NVA (Nene Valley Audio), died in 2019. But the assets in the company and designs were taken over by an ex employee and the company resurrected.
But that horror story with the plastic bottom certainly dates back to Dunn, and was probably hand built by him. In very much not the same way as one man building an Aston Martin engine.
One of Dunn's (many) quirks was doing away with output inductor and zobel. Hence the need for low capacitance cable to stop the thing hooting. And there is no SOA protection either. So the power amps are very easy to destroy.
A further quirk was using plastic for as much of his designs as possible, and getting rid of metal fixing screws. Hence adhesively bonded stuff (such as the power transistors) and a horrid mess of wiring.
Craig
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