The Mercedes Bose in the 500 SL is a verryyyyyy crappy. It was replaced with a Eclipse head unit and speakers and it improved dramatically I wish Benz could do the factory sound like Lexus/Toyota. You would think a $80,000 car would have a decent stereo but that is just not the case. I must add that even Ferrari which used to have pretty shappy systems (1 speaker) are better that MB.