Getter flash is something that does continue to do it's job as tubes get used, and it needs to be hot to function. The idea is that as tubes get used, the metal pieces will give off molecules that the getter will absorb thereby keeping the vacuum as hard as possible. As the tube gets used, the...

Hello all, glad o be accepted to your community. I'm definitely a headphone nut, but my main focus is vacuum tube devices. I try to design circuits and also build amps using other's circuits. My favorite part of any amp is the power supply. IMHO power supplies are often overlooked and...