I bought, installed it - after getting Nissan antenna adapter in addition to the FM adapter that came free with its purchase.After all that - it looks nice... but sound is substandard compared to CD. No it cannot be iPod problem. It cannot be result of compression. I buy through iTunes to burn on CDs. I don't know what else could that be.I am about to rip it off from my dashboard and return it back to best buy. The only hezitaion is that I spent so much time and effort on installing the damn thing.