1、192KHz Automatic Decoding: Built in high performance RTOS operating system and audio decoding chip, compatible with DTS / AC-3, 192KHz/24Bit; support DTS/Dolby AC-3 (LPCM/PCM/RAW). Support MP3, AC3, DTS, WAV, WMA, AAC, ALAC, FLAC, APE, OGG, M4A. AC-3/DTS (LPCM/PCM/RAW) automatically decodes the input signal without any action.  2、Multi Interface Automatic Identification: Digital SPDIF (Toslink/Optical) and coaxial input ports, 6 RCA Cinch channel outputs (FL, FR, SL, SR, CC, SUB) and 5mm stereo headphone port; automatic identification of input signals, automatic Switch between fiber optic and coaxial channels.  3、2 Audio Mode Switching and LED Indicator: 1ch/0 channel output one key switch; when you need 1CH, please turn on "1CH", and make sure your audio source has Dolby or DTS format and is in your Set "RAW" or "Bitstream" correctly on the device. There is also an LED indicator on the front panel to check whether the signal is 1ch.  4、Adjustable Volume: A volume knob control to adjust the output volume, AV power amplifier is still needed. Note: When you find that the volume is very low, please double check and adjust the volume of your audio equipment and amplifier. Once the output of the audio equipment or amplifier is very low or in the lowest state, the overall volume will also be very low.  5、High Compatibility: Anti interference, small shell and metal shell (aluminum alloy box). Support network players, HDTV, DVD, DVD, DM500S, DM800HD, game consoles, for PS2, for PS3, for PS4/Pro, for Xbox, connect your AV audio amplifier, receiver (such for Logitech), perfect for enjoyment Digital home theater and surround sound, etc.