What if I test the hot to ground or neutral to ground?
I tried isolating just the amp, with nothing else plugged in, and the variac still hums / buzzes.
PS Audio has a product called the Humbuster that stops DC from getting to your electronics which causes the transformers to hum. So how does the DC get into the lines, then?
I tried isolating just the amp, with nothing else plugged in, and the variac still hums / buzzes.
PS Audio has a product called the Humbuster that stops DC from getting to your electronics which causes the transformers to hum. So how does the DC get into the lines, then?