Transform your visual display setup with our 4K 3x3 Video Wall Controller, designed to deliver stunning clarity and seamless control for an unparalleled viewing experience. 4K Resolution: Enjoy exceptional image quality with support for input video resolutions of 3840x2160P at 25/30Hz and 1920x1080P at 25/30/50/60Hz. The output resolution reaches up to 3840x2160P at 30Hz for four screens, ensuring each display delivers sharp and vibrant visuals. Compliant with HD Multimedia Interface 1.4 and HDCP 1.4, this controller also features a 3.5mm stereo sound port for connecting external audio devices like speakers, amplifiers, and soundbars. For optimal performance, set all screens to 1080p resolution. Main Function: This 4K UHD multi-screen video wall controller is perfect for LCD TVs, ultra-narrow side LCD screens, and projectors. It supports 1-9 HD Multimedia Interface output stitching modes, including 1x1, 1x2, 1x3, 1x4, 1x5, 2x2, 2x3, 2x4, 3x2, 3x3, 4x2, 3x1, 4x1, and 5x1, offering flexibility for various display configurations. Easy to Control: Operate the mosaic processor effortlessly with the included infrared remote control. The device supports RS232, button press control, and voice control for intuitive operation. Adjust settings such as mode selection, edge masking, cascading modes, reset, brightness, and contrast with ease. Note: The default voice setting is Chinese; refer to the QA section for instructions on changing it to English. Media Player: Equipped with an 8GB local disk, this controller supports USB video source playback. It automatically plays media from a U disk, and videos can be copied to the local disk for convenient access. Edge Mask Function: Eliminate visual gaps between display units with the edge mask function. This feature ensures images appear seamless and natural, without deformation or stretching, for a more vivid viewing experience. Rotation: While the controller does not support 90 or 180-degree rotation, you can achieve portrait mode by using a computer as the input and rotating the desktop to 90 degrees. For a portrait 1x3 setup, select the 3x1 mode. No Stretching Resolution Setting: Configure your input resolution for various modes to prevent stretching. For example, use 3840x1080 at 30Hz for 1x2, 5760x1080 at 30Hz for 1x3, and 3840x2160 at 30Hz for 2x2 and 3x3 setups. Enhance your display capabilities with our 4K 3x3 Video Wall Controller, offering superior resolution, flexible configuration options, and user-friendly controls for an unparalleled visual experience.