It's my 2.1 sound system. The center image is a combination amplifier and subwoofer with a very tough clear plexiglass like enclosure, properly vented and ported for highly accurate low bass reproduction. The two side (satellite) speakers are made of the same encasing which is almost unbreakable, and consist of 4 1" speakers each in parallel on each side for excellent sound separation. The subwoofer level can be adjusted at the subwoofer and there are touch controls on the right side satellite for overall volume. The subwoofer also contains a nice little led that I use as a nightlight. I use the system for mostly an improved television sound. For other music I use a bit of a less unique looking sound system with a larger subwoofer and a more powerful amplifier. (Louder deep boom-boom).