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.
Thanks Doug:
I am not really an FB guy, too many media options out there. I stick to very few. I will see what I find though.
Thanks again, I love your work, very good engineering.