5.1 Audio Decoder: 5.1CH audio decoder can fer audio from Optical/Coaxial/Other Channel into 5.1 sound track(6 Channel), and output through amplifier with stereo sound. Wide Application: All smart TV's digital optical or coaxial, fer into sound track for speaker/amplifier. Suits for Smart TV/TV Box/Projector/ etc as input, Amplifier/2.0 Speaker/5.1 Home Theater System as output Multiple Interface: Multiple audio input port,Optical x 2, Coaxial x 1 and 3.5mm AUX x 1,through the chip the audio fer into stereo quality sound as output. Return for Original-Sound: 5.1 channel lossless surround sound,DTS digital formation , DB quality sound,reach theater level quality sound with one module. Plug And play No Delay: Support Coaxial/Optical audio directly to 5.1 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 quality intelligent chip, using aluminum alloy as host,better performance in anti-interference and heat dissipation. Product:5.1 Audio Decoder Sampling Rate:32-192KHz Bit Rate:16-24Bit Chip:Third Generation Intelligent Chip Input:Optical x 2, Coaxial x 1, AUX x 1 Sound Track:2.0/5.1 Sound Track Output: x 3 Colour:Black Material:Plastic Size:105x75x25mm Package Contents: 1 * Audio Decoder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.