Frisby BS360 Silver PC 2.1 Amplified Subwoofer Computer Speakers 1200 Watt PMPO and 32 Watt RMS powered The speaker system is magnetically shielded to provide the greatest protection against image distortion Compatible with all type of PC models, Labtops, and all Mac models, mp3 players, discmans, walkmans equipped w/ headphone jack Controls: Power LED / Volume Control / Bass / Treble 1 Year Manufacturing Warranty