Just got one of these two days ago and it has done nothing but click and squeak allmost nonstop. I am running mine from one of several dedicated circuits that has nothing else on it. I am going to try a couple of different things before I send it on its way. Needless to say that this is very loud and annoying. I knew better than to buy Monster products but I wanted to give this thing a try. I'll probaly end up with more PS Audio gear or maybe Tice.