Overview: Easy Plug & Play Installation USB bus powered-Requires no external power Stereo Headphone output lets you jam with your computer & can also be used formonitoring with active monitor speakers Plug in your favorite guitar & turn your PC or Mac computer into a guitar amp & recording system without the need for any other hardware High-quality components & exceptionally rugged construction ensure long life Variable-speed files playback function for MP3, WAV, AIFF audio files' perfect foreasy learning & practicing Audio Quality: 24-bit, 44.1/48k Hz System Requirements: Mac OS 8.5, 8.6, 9.x, OS X, Windows XP SP2, Windows