After hooking up the 755 I notice a faint radio station being played in my speakers if I hold my ear 1-2" away from the tweater. The amp is NOT hooked up to my processore and all the wiring between it and my speakers is BetterCables. When connected to my processor, the volume of the "noise" does not rise and fall with a change in the volume control. Moving the amp out of my cabinet reduces the audibility of the station almost completely. I do not have any FM/AM antenna hooked up to my processor. The satellite feed is nowhere near the amp and it doesn't matter if I plus the amp into a dedicated circuit or through a Monster Theater Power Center. What else should I look for in order to reduce the station noise? It's not critical since I can't hear it from my listening position, but psychologically, it's killing me knowing my system is not "clean".

Thanks