@lewm I switched the interconects to MIT, the problem is still there.
You are right, when I stand with bare foot and touch the transformer’s gain knobs, the hum is gone. The problem is the ground disconnect while on the mute mode.
@whart Thank you, I will wait for a day or two to contact Albert. But as of right now, I trust the seller with his excellent reputation. I think he will contact me tomorrow when he is back to work.
You are right, when I stand with bare foot and touch the transformer’s gain knobs, the hum is gone. The problem is the ground disconnect while on the mute mode.
@whart Thank you, I will wait for a day or two to contact Albert. But as of right now, I trust the seller with his excellent reputation. I think he will contact me tomorrow when he is back to work.