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.
few examples , hehe-food for thought ........
do not ask me for resistor values- I didn't checked anything ;
I always draw my own schematics and don't take anything in memory 😉