Got it. Thank you for your clarification. Currently I’m assembling a tube amplifier where I’m finding a problem that I’m not able to understand and fix. Can I ask your help? If yes, I’ll send you my electrical schematics and also the waveform of the problem that I’m facing. I understand if you can’t help me. Best regards.
Well done video. I have a technical question: why the two wires between 12BH7 and the power tube EL34 are crossed?? Someone can answer to this simple (not for me) question?