Think the head unit I have is a Symphony (could be wrong, should have checked I know). Problem is it occasionally cuts off sound to the rear speakers for a bit then puts it back. It does it when the car is stationary, so I doubt if it is a connection problem. Theres no set pattern to it either, its not when its cold or hot. Is this a common problem? or Is it a knackered head unit? /ubbthreads/images/graemlins/vomit.gif Cheers!