In Reply to: The GM20 has some similarity to the Cecil Hall patent.nt posted by Ralph on February 1, 2012 at 14:49:58:
Yes I agree with You !More time I spend analyzing this Graff GM20 OTL Circlotron circuit design I find him more and more that is very,very good designed !, and is designed in very elegant way to .
Think beacose that differencial Input gain stage is bootstrapped with Output Circlotron power stage the whole amp circuit is internally very dynamically coupled , and some specific resulting Amp sonic signature exist there for sure to .Best Regards !
Edits: 02/01/12
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- RE: The GM20 has some similarity to the Cecil Hall patent.nt - Banat 16:06:13 02/01/12 (0)