WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
Friends, greetings. I want to make a clone of Sansui AU-111 with the addition of UL-mode to the cathode feedback. What proportion is better in the end? I have a toroidal trance with UL taps-33%, and CFB-10% Ra.