2.1 speaker system with optical input 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 RMS produced by the satellites, each comprising of a 3 inch midrange and ¾ inch tweeter, totaling 53 watts RMS. The incorporation of the Edifier Intelligent Distortion Control technology effectively and efficiently reduces distortion at loud volume levels maintaining a great audio experience at the loudest volumes Total power output: R/L: RMS 9W x 2SW: RMS 35W THD + N (testing level): 10% Signal to noise ratio: ≥85dBA Frequency Range: 55Hz-18KHz (±6dB) Audio input: Optical, Auxiliary, RCA Input sensitivity: R/L: 450mV ± 50mVSW: 150mV ± 50mV Adjustment: Remote control, audio input, bass and treble adjustment, volume control buttons and dial on the amplifier Dimension: Amplifier: 250mm x 78mm x 255mm (W x H x D) Satellite: 130mm x 90mm x 180mm (W x H x D) Subwoofer: 288mm x 232mm x 242mm (W x H x D) Weight: 7.8Kg (net) | 8.9Kg (gross)