10-channel passive monitor panel. Designed to provide aural and visual monitoring for outputs of up to 10 power amplifiers, multi-channel sound and program system. It includes a 5" monitor speaker, a volume control, a watt meter, and a 11-position (OFF and 10 channels) selector switch. The unit also furnished with a line voltage selector on the rear panel to allow monitoring of 25, 50, 70, and 100-volt line outputs.