Built-in Dolby Digial, Dolby Digital-EX,Pro Logicll,DTS,DTS-ES,Neo-6 Decoder. 4Optical input and 3Coaxial input. Component video switching 3 in1 out. S-VIDEO SWITCHING 3 in 1 out. Composite 3 in 1out. Protection to overheating and overload power suply. OSD (On Screen Display) function. Tuner:RDS,20FM Preset. 6-CH Power output:140W*6(6ohm) Distortion: <0.06% (20Hz to20kHz,10W) Frequency response:18Hz-18kHz Signal-to-noise ration: >= 92dB(A-weighted) Gross weight:23kg/pcs Dimensions(W*D*H):432*452*160mm Package Dimensions(W*D*H): 552*582*268mm