I have a kenwood excelon kdc-x492. I used it for about 2 weeks and my subs and amp got stolen,so I took it out. It is a sweet radio and has alot of featuers. It has 3 4 volt pre outs,sat radio ready,HD radio ready,bluetooth ready,and it has a usb and aux input in the front. The usb and aux has a little door that covers them so you cant see them unless you need them. lmk,thanks