I have had an ongoing problem with my Bose system. The dealer has replaced everything in the last 3 years and finally just said that was the way it was. The issue is that while listening to the radio with the surround on the great sound fades out and it sounds like a cheap stereo and then it will come back. They checked the antenna amp and it was working. I live in an area where the signal strength is very good but this keeps happening and it is annoying as it goes from great to **** and back again about every five minutes no matter where I am driving. No problem with the CD. I know with the 928 they added a second antenna to help with reception.