I have went through every setting on my Sherwood R772 so many times and tried everything. I am going to have the stereo guys bring another amp to see how it sounds also. But I hope they solve this. It is the best stereo shop we have out here in Flint Michigan so I will let you guys know. I wish I wasnt such a perfectionist with everything I own. I also own a $10,000 computer (see digitalstormonline.com) I know they hate me because they had to replace so much stuff on it til it was perfect.