Build-in high performance RTOS operating system and audio decoder chipsupport DTS/AC-3. Super fast start time about 3 secondssmall size and metal case, Anti-interferencesupports volume adjustment. Input:1 SPDIF Optical, 1 Coaxialoutput:L-OUT-R 3.5mm Headphone Portadopt RCA/3.5mm Headphone port output ,convenient and efficient in use. Auto switch between optical and coaxial channel inputAuto decode AC-3/DTS (LPCM/PCM/RAW) input signal without any action. High compatibility: Support network player, HDTV, Blu-ray DVD, DVD, PS3, XBOX 360, DM500S, DM800HD, etc. Specification: This audio decoder can auto convert optical/coaxial channel(Support LPCM/PCM/RAW) input to 2.0 channel analog audio output, and support decoding Dolby AC-3/DTS(include 5.1 RAW digital audio streaming). So it is widely used in families, schools, squares, concert halls, cinemas and other public places to enjoy the shock effect of DTS or Dolby. Support audio format: MP3,AC3,DTS,WAV,WMA,AAC,ALAC,FLAC,APE,OGG,M4A Signal Noise Ratio: 120db Stereo Isolation: 80db1KHZ Channel Unbalance: 0db Sampling Rate: 32~192 KHz Bit Rate: 16~24 Bit Response Frequency: 20Hz~20KHz+/-0.7db THD: 20Hz~20KHz 0.25-0.065% THD+N: 1KHz 0.15% Analog Output level: 2.2V Shell Dimension: 81.7 x 78 x 21.2mm Weight: 110g Port: Optical1,Coaxial1,earphone jack1,L/R1 Working Voltage: DC +5V Max Power Current: 200mA Working Temperature: 0-70 Working Humidity: 10%-80%RH(non-condensing) Storage Temperature: -10-80 Storage Humidity: 5% -90% RH(non-condensing) Package Includes: 1 Peice Decoder 1 Peice User Manual 1 Peice Micro USB Power Cable