The BA635 is Boston Acoustics' most compact, powered desktop audio system. Incredibly portable and affordable, the 635 sacrifices nothing when it comes to delivering high-fidelity audio. Simply connect the system to any source with a headphone jack or line-level output including video game stations, portable CD players, MP3 players, and more. In a close environment, like at a computer workstation, the BA635 offers an intimate and defined sound even at low volumes - a characteristic contrasting other systems that sound lifeless at low levels. Crank the volume however, and you'll wonder how such a room-filling sound can come from such a compact system. Many customers have chosen the BA635 for its portability and made it their stereo system for the road.