ViewHD Prosumer HDMI 3x1 Switch | 4K@30Hz HDMI v1.4 | MIC Audio Injection/Combiner | HDMI Audio Extractor | Optical/Coax/RCA L/R to HDMI Audio| ARC | Model: VHD-PH3X1GS

This product is the one and only on planet earth, It introduces the special audio injection function to modify or replace the original HDMI audio signal from the HDMI source. This VHD-PH3X1GS offers many exclusive and versatile features not found in any other HDMI switches. audio injection mode enables the selected audio signal from one of the following four audio inputs: to slink, coax, analog RCA L/R and mic inputs to replace the original audio signal from the HDMI input. The mic mode has additional adjustable mic input volume control function to inject/combine the desired amount of mic audio signal to the original HDMI input 2chstereo audio signal or completely replace the original HDMI input audio signal. The mic mixer mode only works when the HDMI input audio is stereo. If the incoming HDMI audio signal is higher than stereo, The incoming HDMI audio signal will be completely replaced by the mic input audio signal.audio extraction mode enables the device to function as an HDMI audio to optical only when the arc audio Format is stereo, The arc audio signal Can be converted to analog stereo and available from the RCA L/R and 3.5mm outputs. viewhd one year warranty.