This doesn't affect my recording, it is just an annoyance. I have a pair of KRK Rokit RP8s connected to a Tascam US-122 that is connected to my G4. I just leave them connected as my computer speakers when I am not recording, so that when I click on music links, etc., I get nice sound quality. The problem is that they are constantly making high frequency noise that seems to correlate to the G4. If I scroll, the noise stops while I scroll, then comes back when I stop. Any HD activity comes through them as well. This is not loud, but when there is no other sounds in the room, it is very noticeable. And every now and then, I get a lower range pulse or pop sound, that is again, not loud, but very noticeable. The Tascam is set up next to the tower, and one of the monitors is on a shelf about 6-8 above the tower. Before I got these monitors, I was just using a pair of JBL2600 bookshelf speakers, and I never recall hearing this noise on them. Any ideas?