The C2XD 2.1 speaker unit features a modern design that is suitable for a wide range of applications, environments and end customers. The C2XD is equipped with Optical, RCA and auxiliary inputs for versatile connection options. The optical input allows the C2XD to be connected to multiple devices, cable boxes, media consoles and gaming consoles for a great audio experience. The 6½ inch subwoofer produces an incredible 35 watts RMS in addition to the 18 watts.