Sylvania’s 2.1-Channel Multimedia Speaker System, experience 75 watts of high-performance sound, designed for use with MP3 players, computer systems, and more, integrated amplifier with RCA stereo input (3.5mm adapter included), full-range satellite speakers with 3-inch drivers, subwoofer with tuned port for deep bass response, convenient in-line volume control, independent volume and bass controls, magnetic shielding.