The audio extractor is one device that can support 3D、 4KX2K、ARC and it allows the one HDMI or one MHL source input and one HDMI output connected to one HD Display (like TV or Projector) and extract the audio to one SPDIF audio out+One LR Stereo audio out. Also the device supports ARC function.

FEATURES
--One HDMI input converter to one HDMI+ One SPDF+ One LR Audio Out

--Output audio support: SPDIF+R/L analog Audio Output
--Support  Full HD 1080P, Full 3D,4K*2K resolution
--Support ARC Function: Without adding one extra HDMI Cable, it can reverse the audio to the AV Amplifier by HDMI Cable connection       with HD TV while the HD TV receive the audio and video content.
--HDMI working in dual mode, can reduce the number of ports

--HDMI to achieve the synchronization of audio signal separation. There are ADV / 
--2.0CH / 5.1CH three kinds of audio mode options
--LED indication: when source or sink is working, LED relative to is light.
--No loss of signal quality
--Installs in minutes
--Need DC5V/1A power supply