Important note 1)The 4K refers to the HDMI inputs signal only.It supports up to 4K 30Hz in and 1080P 60Hz out. 2)Pls use qualified HDMI cable with all 19 pines wired and shielded to pair the source and display. Most sync issues are caused by poor cables. 3)For a pleasant video experience, pls use Professional Video Walls. 4)To supports PCM 2CH stereo audio only either from Aux or the Digital toslink port.And under some cases, when the input is 4K 30Hz, there might be no audio. Pls set the resolutions to 1080P. 3X3 Video Wall Controller The 3X3 TV wall processor can distribute one HDMI or DVI input signal device (DVD, TV Box, Xbox, PS4, Computer etc.) to 9 HDMI outputs display screens simultaneously, which via LCD splicing screens can form a complete dynamic large video wall screen.
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