@kosst_amojan
My interconnects are all shielded, but they could be under-shielded. If I turn everything off in my system except for my amps, I can still hear the noise. So in that case we would look at the speaker cables, they are shielded too. When I turn on my pro-audio monitors plugged into the same circuit or a different circuit, they exhibit the noise too (that rules out my system). Keep in mind, these pro-audio monitors are self powered with class AB amps built into the speaker enclosure, so it's a self contained amp/speaker.
I do not have the noise on my TV or computer.
I did think about the tubes picking up the noise because on my amps, all the tubes are out in the open? But then I had a solid state phono preamp in my system just recently, and that picked up the noise as well, so that rules out the tube theory.
My interconnects are all shielded, but they could be under-shielded. If I turn everything off in my system except for my amps, I can still hear the noise. So in that case we would look at the speaker cables, they are shielded too. When I turn on my pro-audio monitors plugged into the same circuit or a different circuit, they exhibit the noise too (that rules out my system). Keep in mind, these pro-audio monitors are self powered with class AB amps built into the speaker enclosure, so it's a self contained amp/speaker.
I do not have the noise on my TV or computer.
I did think about the tubes picking up the noise because on my amps, all the tubes are out in the open? But then I had a solid state phono preamp in my system just recently, and that picked up the noise as well, so that rules out the tube theory.