Edifier S760D 5.1 Home Speaker System 5.1 channel home theatre system with Dolby Digital, Dolby Pro Logic II, and DTS Digital Surround decoders 3 optical, 1 coaxial input, analog 5.1 channel, and dual stereo inputs Wooden enclosures for all speakers effectively reduce resonance and vibration 10(260 mm) subwoofer driver with twin bass reflex radiators 2-way satellite speakers with 3(92 mm) mid-range drivers and 1(25 mm) silk dome tweeters