This is about about Nutshell HiFi,  by Lynn Olson,  dedicated  to building tube HiFi products.

I want to put some attention to this company.  Just because I think they are going the right way, and simply because these schematics are so well thought of.   They explore corners of audio that are ignored by the big crowds, and use engineering styles that may have gone out of fashion anywhere from twenty to sixty years ago....!

They have a lot of support for DIY,  and very generously  share their experience with anyone who is interested.
 
 
 
 

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