This is interesting and potentially helpful for me. I've got a bit of hum and I thought I did everything to try to eliminate it but I did not try putting the LM-805IA on a different strip/conditioner from my DAC and/or preamp. I'm not at home now but once I get home, I'm going to give that a go and see what happens. I have the LM-805IA, a Mytek DAC and a Linear Tube Audio preamp all going into an Audioquest Powerquest 3. Sounds like at the very least , I need to experiment with pulling the LM-805IA off of the Audioquest and see what that does.