Elevate your audio experience with the Bose PS3-2-1 Series II Acoustimass Module Powered Subwoofer Speaker. Designed to deliver rich, deep bass and high-end sound, this unit is an essential component for any home audio system. Its rectangular shape and black color seamlessly integrate with your existing home theater setup. The Bose 321 model is compatible with the PS3-2-1 Series II line, ensuring a perfect match for your audio inputs. Although specifics on driver size, system configuration, and RMS power remain unknown, the speaker's design and wired connectivity offer a reliable and high-quality audio output, characteristic of Bose's renowned sound engineering.