The USB input on the CD-P650 can be plugged into USB media for MP3 playback, as well as your iPod or iPhone. The iPod connection accesses your music digitally, bypassing the analog circuits of your portable device for the best-sounding playback. A full-featured wireless remote control is provided. For playback of your iPod, USB media and CDs, there's no better-sounding solution than the CD-P650.