High quality wooden vinyl over dense partial board for great sound performance and looks. Modern style is accentuated by the sleek aluminum driver diffusers.The S360DB uses a wireless subwoofer with an 8-inch professional speaker. On the right side of the subwoofer is a bass reflex port for vibration-free bass.The S360DB has audio inputs for every imaginable device including 2 analog RCA, 1 Hi-Res USB as well as digital optical and coaxial.The S360DB uses the electro-acoustic technology. Making the most of the capabilities of the Texas Instruments processor in combination with its own DSP the speaker system produces clean, low bass.