So I am starting my next amp design and am thinking something similar to a 5E3 or 6G3 (Not sure about the tonestack yet.) I really like the sound and the concept of selfbiasing in a cathode biased amp but I would like to try a LTP instead of the regular Tweed style cathodyne PI. (I so far have only experience with the LTP in a fixed bias BF style amp...) Is this a crazy, stupid idea? Going through the Fender schematics it looks like the change from cathodyne PI/cathode biased amps to LTP/fixed bias went hand in hand with a few exceptions (Brownface and BF Princetons). Is there a reason why these two didn't get used together? My main thinking is that the LTP and a 12AT7 would probably give sweeter distortion and shift the distortion more to the poweramp section. Does anybody have experience with this or can tell what difference to expect? Something to be careful for? Thanks!