The Logitech Z-5500 THX 5.1 Digital Subwoofer Sub is a high-quality subwoofer designed for immersive surround sound experience. With its wired connectivity and support for THX surround sound formats, this black subwoofer from Logitech delivers deep and powerful bass for a truly cinematic audio experience. Perfect for enhancing your audio setup at home or in the office, the Z-5500 subwoofer is a reliable and top-of-the-line option for improving your sound system.