Practical. Affordable. Appluadable Specially engineered drivers housed in a ported enclosure deliver a full spectrum of pure, distinct sound Bass-enhancement technology creates deep bass without a subwoofer Ultra-convenient controls and jacks located on the right speaker The VS2321 three-piece system delivers high quality sound and is easy to set up. Its incredibly convenient design puts controls, a headphone jack, and an MP3 player jack right on your dekstop.