Fangrui Product Details 5.1 Audio Decoder: 5.1ch Audio Decoder Can Fer Audio From Optical/coaxial/other Channel Into 5.1 Independent Sound Track(6 Channel), And Output Through Rca Amplifier With Stereo Sound. Wide Application: All Smart Tvs Digital Optical Or Coaxial, Fer Into Sound Track For Speaker/amplifier. Suits For Smart Tv/tv Box/projector/playstation Etc As Input, Amplifier/2.0 Speaker/5.1 Home Theater System As Output. Multiple Interface: Multiple Audio Input Port, Optical*2, Coaxial*1 And 3.5mm Aux*1, Through The Chip The Audio Will Fer Into Stereo Quality Sound As Output. Return To Sound: 5.1 Channel Lossless Surround Sound, Dts Digital Formation Services, Db Quality Sound, Reach Theater Level Quality Sound With One Module. Plug And Play No Delay: Support Coaxial/optical Audio Directly To 5.1 Rca Audio Output, No Delay. Wired Power Supply Available, If Happen Incompatible Or Other Situation, Please Use With Power Wire. Strong Heart In Metal Host: High Quality Sound Require A High Performance Chip. Built In High