Did you know you can set the bass/mid/treble indepently for AM/FM/CD/AUX? My CDs and mp3 player sounds best with the bass at -2, FM at -1, and AM talk/news at -5. I also bump the front/rear balance +1 to the rear. Sounds more neutral to me that way.

All in all I am very pleased with the JBL sound system. My only ( very minor! ) nits are 1) the stereo sound field is a bit compressed, ie the left/right separation is not as wide as I prefer, 2) the bass (while amazingly deep in response) is not as tight as I like. These are very minor, but noticable compared to my custom Alpine setup I had in a Honda Accord.