Hello all. Just need some advice on a possible DC offset situation. I have 2 separate amps in my system. One amp is connected to my front LFR 1100's and VP180HP. The other is connected to 4 QS8's. I have a hum coming from both amps that is audible when turned on and without any source being played. Has anyone had this problem and what was your fiix? Emotiva has an inexpensive device,CMX-2, that may help. Any thoughts would be appreciated.