I dragged my amp into another room and first tried straight in with the loop off. Then with the pedals hooked up on loop on. I think the main problem was being near my computer, which seems to add a lot of noise. I don't understand because I have my guitars shielded and potted, and I plug the pedals and amp into a Furman noise canceling power conditioner. I even still get RF through the amp sometimes, which the Furman is supposed to kill. Even when I plugged the amp in the other room when I was too close to electronics like the TV and stereo I picked up noise. wtf? Also, this has been a kind of long-time problem, but I get small amounts of static with the guitar plugged in and the volume up. It kind of sounds like a fireplace. I get it using all channels, loop on and off, using different guitars, and out of different outlets. I had the amp recently serviced and all tubes changed out. The guy said he didn't get the static problem where he was. I'm at a loss.