The Altec Lansing MIX Digital Boombox Speaker System was developed for the "DJ lifestyle" -- for those people who know music and like to pick the playlist to liven their scene. Multiple people can jack in their iPhone, iPod or other music device, and the MIX lets you toggle between sources on-the-fly. The system is compatible with the iPhone 4 and features a 30-pin dock connector for the iPhone/iPod, in addition to two front-facing 3.5-millimeter jacks so everyone can enjoy their tunes.