Found this looking for something else. Starts at about the middle of the page.
https://www.tubecad.com/2020/06/blog0506.htm
https://www.tubecad.com/2020/06/blog0506.htm
Think harmonic restoration
fazer said:I like this description. Thanks for posting.
ruffrecords said:the gain of the anode follower is very deliberately chosen so as to largely cancel the second harmonic distortion produced by the EF86. There is a description somewhere of the design - I will see if I can find it.
Winston O'Boogie said:Yep, indeed. I don't have it at hand but it's in the original manual for the REDD.47
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