Features: brand new and high quality Adopt RCA/3.5mm Headphone port output ,convenient and efficient in use. Auto decode AC-3-/DTS (LPCM/PCM/for RAW) input signal without any action. Auto switch between optical and coaxial channel input. Build-in high performance RTOS operating system and audio decoder chip; support DTS/AC-3-. High compatibility: Support for network player, HDTV, Blu-ray DVD, DVD, for , 360, DM500S, DM800HD, etc. Input:1 SPDIF Optical, 1 Coaxial. Output:L-OUT-R; 3.5mm Headphone Port. Small Size and Metal for case, Anti-interference. Super fast start for time about 3 seconds. Supports volume adjustment. Specifications: Support audio format:MP3,AC3-,DTS,WAV,WMA, AAC,ALAC,FLAC,APE,OGG,M4A Signal Noise Ratio:120db Stereo Isolation:80db（1KHZ） 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　 for Shell Dimension:81.7 x 78 x 21.2mm Weight:110g Port:Optical ×1,Coaxial ×1,earphone jack×1,L/R×1 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) Size: approx. for 81.7 x 78 x 21.2mm/3.22x3.07x0.83in Package Includes: 1PC x DAC Converter 1PC x USB Cable note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.