The Boston Acoustics MCS90 Surround Sound Speaker Set is a compact 5.1 channel home theater speaker system with a sleek black rectangular design. It has a stereo L/R RCA audio input and wired connectivity. The set includes 5 speakers and a subwoofer, with a total RMS power of 100W and an impedance of 8 Ohms. The speakers are designed to deliver high-quality sound and are suitable for use in a home theater setup.