Wayne Parham Messages: 18756 Registered: January 2001
Illuminati (33rd Degree)
I'm guessing on the SET amp, you're talking parallel output tubes, with one having phase reversed on the input and the output. Each tube requires its own output transformer that way. I haven't looked closely at parallel SET amps, but I'm guessing most run the tubes together, and use a single common transformer. Doubles power but doesn't cancel even harmonics. You're proposing a split-phase pair of SET's instead, yes?