Product introduction: This 5.1 channel digital audio decoder can convert optical signal, coaxial signal (including LPCM), or digital audio signal output from computer, PC sound card, PS2, PS3, XBOX360, HD player, HD set-top box, DVD player for 5.1 analog audio signals. Colleagues decode Dolby AC-3/DTS audio into 5.1 analog audio, allowing many homes, schools, squares, music listening, cinemas and other places to enjoy the shocking effect of DTS or Dolby sound field. Functions and Features: 1. Decode the DTS/AC-3 source digital audio signal and convert it to an analog 5.1 channel audio signal 2. Convert the analog stereo (R/L) signal to an analog 5.1 channel audio signal through the audio processing chip 3. 2 channels of SPDIF optical input, 1 channel of coaxial coaxial input, 1 channel of stereo input, more perfect and more convenient for switching brought by multi-channel digital audio output 4. RCA output interface, easy to connect to power amplifier 5. Multi-channel one-button switching, convenient and fast, and simultaneous stereo and 5.1 channel switching Product Specifications: Sex to noise ratio: 120db 7. Separation: 80db (1KHZ) 8. Response frequency: 20Hz~20KHz +/- 0.5db 9. Analog output level: 2.2V 10. Product size: 105×75x25mm