I have a USA 630 custom autosound with the 10 disc cd changer mounted under the seat .It has an external usb port and an auxillary jack also which accomodates both an Ipod and Mp3 player.The cd changer is controlled by the deck.With the usb you can also load your favorite songs onto a flash drive ,with the flash drives available it makes your options unlimited. I also bought the kick panel speakers from them . The head unit looks stock with it off and is back lit when turned on,it also incorporates a clock into it. I like the stock appearing look with all the modern equiptment.
