I have a rotel 1090 and a denon 5803. I use the 1090 to drive my two mains. I have very loud hum and I mean loud when I touch the interconnect from the denon to the 1090. Here's the thing I don't understand. When I unplug everything from the outlets (except the 1090) and also disconnect the cable line from the wall into my cable box, and then I plug in the interconnect from the denon to the rotel I still get the very loud hum. I would think with EVERYTHING unplugged from the outlets except the rotel and no TV cable connection, I would not be getting the loud hum just by connecting the interconnect from the denon. If I use a cheater plug, the probelm goes away. Any ideas?