The Sonos Sub Subwoofer in black is a rectangular-shaped unit designed for enhancing your home audio system. With compatibility for universal brands and models, this subwoofer can seamlessly integrate with your existing setup. Featuring Dolby Atmos surround sound formats, wireless connectivity, and smart home compatibility with Alexa, the Sonos Sub offers a high-quality audio experience. Made of plastic with a sleek black design, this subwoofer is a stylish and powerful addition to your home audio setup, providing deep and rich bass for a more immersive listening experience.