07-24-2025, 07:35 PM
This capacitor is usually present in all circuits of vacuum tube power amplifiers. It is connected in parallel to the primary winding of the audio transformer and has nothing to do with the power supply or second grid bias, but is designed to block high-frequency resonances in transformer and excite the output stage of the audio amplifier.
If you want to work, lie down and sleep, and everything will pass.




