Each new model keeps getting better and better with many awesome features to stay current with today's technology. The DEH-P3900MP now gives you the ability to playback AAC iTunes. Besides that, we are including a much larger LED display with 16 character text. So listening and seeing your music is now at your fingertips. Finally, we included 3x RCA inputs for added expansion of sound for your receiver. All this and much more at an extremely comfortable price.