Sound Formats: This 2x2 HD Multimedia Interface Video Wall Controller supports PCM 2.0 sound format, ensuring clear audio output. Please note that it does not support Dolby Digital and DTS formats. For sound output, external speakers or bar speakers are required, as sound does not pass through the monitor or external sound systems. Supported Resolutions: The video wall processor is compatible with HD multimedia interface 1.4 and HDCP 1.4 standards. It supports input video resolutions of 1920x1080P at 25, 30, 50, and 60Hz, as well as 3840x2160P at 25 and 30Hz. The output resolution is 1920x1080P at 25, 30, 50, and 60Hz, ensuring high-quality display across all connected screens. 180 Degree Screen Rotation: Featuring a 180-degree rotation function, this video wall controller allows you to flip the image of HD multimedia interface outputs 1 and 2. This feature helps adjust the screen to the direction of the thinnest edge, reducing the middle thick border for a seamless viewing experience. Edge Mask Function: The edge mask function of this video processor corrects and aligns borders and image edges, making multiple screens more comfortable to view. It supports 8 display modes, including 2x2, 1x1, 1x2, 1x3, 1x4, 2x1, 3x1, and 4x1, providing diverse display options to suit your needs. Easy to Operate: Designed for user convenience, this HD multimedia interface video splicer is plug and play, requiring no driver installation. It supports 1 HD multimedia interface or DVI input and 4 HD multimedia interface output signals, allowing you to connect up to four LCD TVs or other display devices such as projectors, DLP, plasma, and other display units. This video wall controller is crafted from durable aluminium alloy, ensuring longevity and reliability. It operates on a voltage range of 100‑240V, making it suitable for use in various regions. Enhance your multimedia display setup with this versatile and easy-to-use video wall processor.