Logitech has taken the award-winning Logitech Z-680 speaker system and made it even better. How? By improving everything from the subwoofer to the satellites and adding new innovations like real-time digital sound equalization. The result is the Logitech Z-5500 Digital, a THX-certified, 500-watt 5.1 surround sound speaker system that offers everything you could possibly want and some things you didnt even know you needed. And once you plug in your PC, DVD or music player, or video game console, youll never want to listen to anything else.