Greetings Fellow Sound Folks !

Indeed...Thank You...I still think interstage trannies are the best phase inverters for push-pull amps. Where else can you get perfect phase inversion, gain matching and impedance matching in one device ? My reference amps are like a SET amp driving fixed bias, push-pull triodes on one chassis monoblocs. The interstage driver trans loads and carries the current of a similar output tube. It is as large as a good output trans. These 1:1 driver trans are getting tough to source.
Thanks for the nice welcome. This is a pleasant place for music listeners...