I posted earlier that I am having a loud buzzing, and beeping sound coming through my center speaker. I thought it might be the 3805 but yesterday I ended up unhooking the sub cable and the buzz went away. I finally got around to installing the BFD yesterday and I think this might be the problem (which really baffles me as this problem existed before the BFD was installed). I went to Radio Shack to pick up some 1/4" to mono adaptors. They handed me some 1/4" to phono adaptors instead and said they were exactly the same thing. Are they, or do I have to have the mono? The BFD is plugged directly into the back of my Monster HTS5100. Could the BFD be the cause of a ground loop? Should it have a 3 to 2 plug installed? I still can't figure out why this problem only exhibits itself in the center channel of the Denon and none of the others.