Reviewed on December 18, 2008The Alpine iDA-X100 is a great receiver for people who transport all of their music on an iPod or MP3 player. The unit offers fantastic digital-audio integration without the need for a separate adapter, but should you ever want to just play a CD, you'll be out of luck.TAGS:Alpine, digital audio, receiver, LCD screen, LCD, MP3, song, menu, button, Apple iPod, USB, CD