Thanks Douglas. I really wanted to try new OPT's. 1, any factory HF22 or 20 that needs a replacement OPT imo, should really get a 32004 rather then a rewind or new production. 2, I would like to compare my restored HF22 to a new build based on the same (or close to), circuit with new OPTs. I do believe it would be a lot less trouble just to plug in one 32004. I believe I will learn a lot more doing the build this way. I do have a friend that can give the stats when I am finished, He has a lot of test gear. Yes, I hope to put Dave's G fixed bias in the mix, so that changes things a little more. Speakers will be La Scallas and the Pioneer, BS 22's that were hot a number of years back. Class A, I might try on the next build when I am farther up the learning curve.