The VP1421 is a multi-in-one presentation switch that integrates a video matrix, True 4K scaler, HDBase T extender, audio DSP, & analog-to-digital converter functions into a single compact enclosure, ideal for meeting rooms & educational spaces. True 4K, HDR Visual Clarity Supports resolutions up to 4096 x 2160 @ 60 Hz (4:4:4) & HDR to deliver vivid content in every presentation. Smooth AV Switching Scaled to Perfection Connect up to 4 sources (1 HDBase T, 2 HDMI, 1 VGA), smoothly switch between them & display contents scaled perfectly to True 4K & 1080p simultaneously. HDBase T Extended Transmission over One Cable Simplifies cabling & transmits AV, power, & bi-directional RS-232 & IR control signals up to 140m via Cat 6/6a or ATEN 2L-2910 Cat 6 cables (applying both HDBase T input & output ports). Built-in Advanced Audio DSP Supports microphone input with selectable 48V Phantom Power & allows microphone input to be mixed with program audio & embedded into display output while automatically reducing program audio to enhance speech audibility. Flexible Audio Embedding/ De-Embedding Supports stereo audio embedding into HDMI output or separation to Audio Line Out & Optical Audio Out. Extract HDMI & HDBase T audio to different audio outputs as well to ease adaptation to you preferred audio setup. Versatile Control, Streamlined Operations Control via front-panel pushbuttons, IR remote, web-based GUI & any control interface via RS-232, Ethernet, & Contact Closure to streamline your operations.