1. 1X HDMI-compatible input and 1X HDMI-compatible output,can sync separation HDMI-compatible audio signal. Supports 1x SPDIF optical digital audio output, multi-channel RCA analog audio output; Supports 12-bit Deep Color Full HD,3D and 4K2K video 2. Support CEC; Support multi-channel LPCM digital audio to analog output, up to 7.1CH. Uses 24bit /192KHz DAC; LPCM audio format indicator 3. Supports 3 modes for audio output. You can switch among multi-channel, stereo (2CH) and mute. 4. High tone quality, low noise; DC5V power adapter 5. SWITCH: Audio output mode switch. Multi:Multi-channel audio Mode. Switch to this mode for the HDMI-compatible source to output 5.1/7.1; LPCM audio per the built-in EDID. Then RCA output 5.1/7.1CH analog audio, Optical; output 2 channel LPCM digital audio and HDMI-compatible output bypass. Note: Need support from source player and disc for multi-channel audio output. 2CH:2 channel stereo mode. Switch to 2CH mode for the HDMI-compatible source to output LPCM 2; channels audio per the built-in EDID. Then RCA, Optical and HDMI-compatible output stereo audio. Mute:Mute Mode. Then RCA, Optical no output, HDMI-compatible output bypass SPECIFICATIONS: (HDCN0033M1) HDMI-compatible resolution: up to 4K/30Hz, 1080P/1080I/720P/576P/480P/60Hz Support video color format: 24bit/deep color 30bit,36bit Input/Output TMDS signal: 05~15Volts p-p(TTL) Input/Output DDC signal: 5Volts p-p (TTL) DAC sample frequency range: 32~192 KHz DAC Bit rate range:16~24 Bit RCA analog output level: 2V RMS SNR (1KHz@ 0dB) greater or equal to 90dB THD+N (1KHz@ 0dB) less than or equal to 001% Frequency response: 20Hz~20KHz HDMI-compatible: input cable distance: less than or equal to 15m AWG26 HDMI-compatible standard cable HDMI-compatible: output cable distance: less than or equal to 15m(1080P)/8m(4K) AWG26 HDMI-compatible standard cable Max working current: 500mA Power