Califone's Desktop Computer Speakers offer a fast and easy way to bring more audio power into your office. The three-piece audio system features plug-and-play convenience with your computer, MP3 player or other multimedia device. The two satellite speakers connect quickly to the larger subwoofer through audio line input jacks. Treble, bass and volume controls on the subwoofer make it simple to adjust the sound quality. Includes an AC adapter and a three-foot speaker cord.