The Logitech Z323 Speaker System includes a Sub Woofer that has been tested and confirmed to work. This home theater speaker system features a 2.1 system configuration with a sleek black design. The Logitech brand ensures high-quality audio performance, and the system includes useful features such as volume control, a headphone jack, and a subwoofer jack. The connectivity options include a headphone jack, wired RCA jack, and the subwoofer is designed to enhance the overall audio experience. This speaker system is perfect for enhancing your computer or desktop audio setup with rich and powerful sound.