Sep 29

HotFET Pre: J-FET audio preamplifier (backgrounds)

HotFET Preamplifier prototype assembled in a "networking" case
HotFET Pre - prototype

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The story has begun long ago with the perplexity caused by the fact that amplifiers based on vacuum tubes consume lots of power, get hot and do sound great; while the vast majority of silicon-based audio devices can stay cool and produce somewhat mediocre results. It did not feel right. Hence my attempt to bring some extra controversy into the world of high definition sound reproduction.

 

The basic idea of this design

The basic idea of this design was: let's put transistors into the "hot operation mode". Continue reading