The vr154p is a 15" lcd rack mounted unit that has a 125 channel TV Tuner, Quad Splitter, Sequentional Switcher/Router with Stereo Audio built-in. This panel has 1024 768 pixels making it a true high resolution video Lcd panel. The Quad Splitter allows all of the four channels to appear on the monitor simultaneously either using the full screen or picture-in-picture fashion. The unit fits into a EIA standard 19 rack, eight rack spaces high. The unit is controlled and calibrated using an on screen display while using the front mounted buttons to adjust. The built-in audio system has four balanced stereo inputs that are mono compatible which automatically default to the video source selected or can select any audio source to accompany any video source. For added flexibility, this unit can accomodate NTSC/PAL composite video, S-Video or XGA for computer monitoring (TV, S-Video and XGA inputs are only available in full screen mode). Unit comes complete with power supply and owners manual.