JBL 150SISAT is a rectangular-shaped 5.0 channel surround system with four black wired speakers that have an impedance of 8 Ohms and a RMS power of 100W. The speakers have mini features and are 8" in height and 3.5" in width. The audio inputs are hardwired and the connectivity is wired. The JBL 150SISAT model is tested and works amazingly well.