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.
Not overrunning a valve that is rated for 3kV 500W plate and is used at 1,5kV 200mA. Just Screen is a bit with too much voltage, but is very far from the 45W max power.
Also I would find it hard to feed another 8V 15A filament....
