Quad processor, 4CH, SAV-104CH 1)4 channel video signal input, 1Vp-p,75 Ohm 2) ... Auto switch for single image mode 3)CE/Fcc, Quad, ... ?25, NTSC 860?25Video Input4 channel video signal input, 1Vp-p,75 Ohm1 channel recording playback video signal input, ... 1Vp-p,75 OhmVideo Output1 channel master monitor output, 1Vp-p,75 Ohm1 channel slave monitor output, 1Vp-p, ...