Avocation Systems is a manufacturer of broadcast quality matrices and input selectors. Sizes range from 4x4 to 32x32 for matrices and 2 inputs to 16 inputs for input selectors. Video formats include component, RGBhv (BNC), RGBhv (HD-15) and DVI. All units can include video, analog audio (with volume control) and digital audio. Control interfaces include Ethernet, RS232, RS485, RS422 and infrared. Features include breakaway audio/video and digital routes. Volume control with muting and ramping is included on all outputs. All stereo inputs include level control.