Dts/Ac3 5.1ch Audio decoder-New upgrade( ARC)1: Support one Optical input,one Coaxial input,Bluethooth 5.0 input,(ARC) input, USB 2.0 input,One PC-USB input. You can switch different signal sources randomy by Button.2: Audio farmat support FLAC,APE,DTS,AC3,WAV,HDCD,DSD,AAC,WMV,MP3,M4A etc.3: Support 5.1ch/2.0ch output mode selection,FL/FR active when 2.0ch output mode.4.Support volume adjustment and switch between previous song and song5: Support Button switch input source ,and turn on corresponding LED.6: Surpport hardware decoding (5.1 channel separation ) and software decoding(2.0ch to 5.1ch)7: Support USB player and Input source selection off memory function.8: The use of DC-5V/1A external adapter supply.Plug Type: Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on.Colour:BlackMaterial:metalSize:108x88x27mmPackage Contents:1 * DA615H Audio Decoder1 * DC-5V/1A adapter1 * Digital optical fiber cable3 * 3.5mm to 2*RCA cable1 * BlueTooth AnntenaOnly the above package content, other products are not included.Note: Light 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.