Enjoy rich, surround sound when listening to your favourite music, watching movies, and playing games with the Harman Kardon Citation Sub S Subwoofer. Built-in 6.5-inch subwoofer delivers high-fidelity sound with deep, detailed bass Dirt repellent and flame retardant premium blended wool fabric construction makes it durable against the rigours of daily use and easy to clean Wireless connectivity lets you conveniently set it up without the need for extra wires WiSA-enabled for low latency pairing with compatible speakers to produce clear, multi-channel surround sound Automatic software updates and upgrades keep services and features up to date What's in the box?