Grass Valley 1RU video / audio routermodel performer VAAsetup with 10 inputs and 1 selectable output for composite videovideo format is composite videoaudio is 10 channel input (2 separate channels)(or stereo if combined) with 2x outputs(2x mono or stereo output)canbe switched together so audio switches with videovideo can be PAL or NTSC. used previously for switching video and audio in Obvan (inputs do not need syned up)comes with connectors for the audio (easy to wire up as each input on the connector has small screw to connetor the wire intoFULL working order