Ok, I ran a 12gauge extension from the dedicated line for my main amps and now the 755 is quiet again. I did not want to spend money on a new amp for my surrounds so this is a solution for the time being. I am glad I do not have to use the 755 for a boat anchor. I is definitely a lot more sensitive to line noise than the rest of my system but when it is quiet it does its job nicely. I need to watch a movie to see if the circuit can handle the extra load.....fingers crossed.