4 Input Digital Video Switcher (Unibody), easy to learn and use. Includes 2 HD-SDI and 2 HDMI Inputs, 2 RCA Inputs for audio embedding with audio mixing feature. Built-in multiviewer, Supporting Linear/Luma Key, Wipe, Mix & Cut Transitions, 1 DSK, Full M/E Preview function, Frame store, Dedicated Stills Buffer for 24 Images. XPT (Cross Point Assignment, Tally output, GPI Output)