Curious how you arrive at the conclusion that the bottom tube plate acts as
a CC load to the OPT. I built the TRIODEEL compact amp output stage using
recommended circuit values and measured the thing. By the measurements I
made, the bottom tube did not behave as a CC load. The whole thing acted
like a poorly balanced phase inverter: nothing more, nothing less. Did I
measure something wrongly or are we speaking of different circuits here?
Steve

I forgot to mention in the previous post that it would seem the performance

of the subject circuit is further compromised by the fact that the G2 current

also runs thru the short tail. That would give rise to an even more interesting
set of harmonics & some unbelievable IM products.

Perhaps Fred N could sell that to one of his guitar pickin' buds!!!

Cheers, John Stewart