Video producers in educational, worship, security, corporate, small studios and clubs / pubs can now use a high quality, rugged, low cost, analog video switcher. SE-500 features include: 4 video inputs (each one is S-Video or Composite), 1 AUX audio and 2 microphone inputs, Chroma adjustment, and Digital video transitions. The real time Quad Split Preview that includes red, yellow and green markers to indicate the program, preview and other sources as well as the next selected effect. And, there is a button that will cause the preview display to show the next selected effect. The operator can use one monitor to observe all sources and the next selected video effect before broadcast.