This unit offers a range of connectivity options, ranging from the ability to play compressed audio formats such as MP3, WMA and AAC discs, to support for USB sources, iPods, HD Radio, and Bluetooth hands-free calling. For iPods, Pioneer has improved the user interface and menu navigation to more closely resemble that of the iPod itself, while adding some extra navigation features, including alphabetical search, iPod passenger control (which gives car passengers the ability to search for music on the connected iPod player itself), and Link Search, which provides a list of all the content by a currently playing artist. ....read more