it claims it s cd quality, i have a pretty decent system in my car but a very bad temporary deck, i am goign to purchase a new deck tomorrow from you gusy experience is aux-in or line- in whatever you want to call it the plug from teh headphone ipod, doe sit give a good quality of sound? i imagine the decks that have teh add on for teh 30 pin connector sound better and if its way better i will invest in it but iw anted to know what you guys thought about the regular line-in plug vs ipod ready 30 pins decks..