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 everyone, i just found a pair of tube call GL-421, i would like to use it as a SE amp, but i can't found any datasheet about it, can anyone help?
(i had search in yahoo and google but i can't see any)