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.
hello, my PS21 power supply has different voltages. 6.3 volts exactly and the other side is 6.26 volts dc ..is this a problem? will I notice any audible differences, appreciate the help thanks
