4 ms·
The main cause of hum in both tube and solid state amps are ground loops that pick up the 50/60hz signal of nearby AC appliances and wiring. These can be caused
by dangerbird2 8y ago
The main cause of hum in both tube and solid state amps are ground loops that pick up the 50/60hz signal of nearby AC appliances and wiring. These can be caused by grounding problems in the amp, the instrument, or even the cables.
https://en.wikipedia.org/wiki/Ground_loop_(electricity) https://en.wikipedia.org/wiki/Ground_loop_(electricity)