Well I got a TFT (LCD) monitor, and it worked great, no noise. The monitor ended up being a lemon though, so they sent out a replacement, however it was a slightly different model. This one made this noise I think you are referring to. I called them and told them I can't have that, so they sent another replacement, this time just like the original, and now I have no noise. Who knows... the one that works for me is the KDS Rad-5. the one that made noise was the Rad-5s. the lady from KDS said they are exactly the same, just have a different look, I said whatever, the 5s makes a noise in my speakers, and the plain 5 didn't.