I just bought a Pioneer DV-563A player for it's SACD/DVD-A function. I already own a Pioneer 503 dvd changer that I use for DVDs/CDs. The problem is they both respond to the same remote signals. I try to turn one on or press play and they both respond. I have to have them both close to each other to have them hooked up to my receiver. Anyone have any suggestions on what I can do for this problem? I was thinking there might be some sort of power switching box, but I couldn't find anything.