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.
greetings to all I'm Roberto from Rome. I'm an amateur. I don't have many skills in electronics. PLEASE would it be possible to have a summary of all the changes ??? best regards roberto
