Technical features: 1, standard 8 channels of video input, up to 12 channels. You can set up 12 sets of HD/SD-SDI, 6 sets of CV or 3 sets of HDMI input. 2, with 3 sets of video (embedded audio) output, 2 sets of HDMI monitor output. 3, 4 sets of XLR balanced sound input, 2 sets of XLR balanced sound output. 4. Two sets of DSK functions, supporting external subtitle system and graphic system. 5, two groups of LOGO display, can be set to a dynamic LOGO. 6, dual recording function, one set is PGM main output, the other set is AUX specified signal recording. 7, 17-inch high-definition surveillance system, multi-screen preview of 8 video signals. 8, internal call system, to achieve 8 internal calls (can be added to 12). 9, multi-core multi-function cable, lossless transmission of video, call, Tally, camera power supply (optional)