I sure could use some help.
I just swapped out a tube amp from my 2 channel rig and with a SS amp. I doing so noticed I now have a humming noise coming out of my speakers. The new amp is a ModWright KWA-100SE. I have it paired with a ModWright LS-100 tube preamp. ICs are MIT S1.3s and speaker cables are MIT S1.3s. Amp, preamp, CDP are all run through a PS Audio Power Plant Premier.
I have experience ground loop hum in my HT system before, but never in my 2 channel rig. In the case of my HT system, I traced the hum to one of three external amps and fixed the problem with a cheater plug. I have used many different amps in my 2 channel rig and have never had any issues with hum (including when using tube amps). I have checked all my all connections and they all appear correct.
Is it possible that the KWA-100SE is the culprit? This ss amp is supposed to be dead quiet. Therefore, I am stumped. I was going to run over to home depot a pick up a cheater plug to see if that has an impact. Before I did that, I am hoping someone might have a suggestion. Any help or thoughts would be greatly appreciated. Thank you!