Logitech Z680 5.1 Computer Speakers (5-Speaker, Silver) Feel earth-shaking bass with 505 watts RMS of thunderous power Be in total command with the Digital SoundTouch Control Center andwireless remote Create 5.1 surround sound from stereo music, movies, and games with Dolby Pro Logic II Six-speaker system that lets you enjoy true 5.1 digital sound with your movies and games with built-in Dolby Digital and DTS hardware decoding Simultaneously connect four audio sources, including PCs, game consoles and DVD or CD players Six-speaker system that lets you enjoy true 5.1 digital sound with your movies and games with built-in Dolby Digital and DTS hardware decoding Create 5.1 surround sound from stereo music, movies, and games with Dolby Pro Logic II Simultaneously connect four audio sources, including PCs, game consoles and DVD or CD players Be in total command with the Digital SoundTouch Control Center andwireless remote Feel earth-shaking bass with 505 watts RMS of thunderous power