• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

wanted- 845 pwr amp p.p.

I have designed and built a few 845 PP amps.....
Have you thought of the 211???
When you say "mostly" Class A...You mean Class A for about most of the drive???? Before breaking into cut-off???
Pure push-pull Class A ...2 tubes??? You won't get 100 Watts....
Unless you go PP Class A2...now you would need one hell of an AMPLIFIER to drive that AMP :)
ANy more info you can provide....