Abstract: A multiplexer for mixing multiple audio inputs into a plurality of summed audio outputs in which computer-controlled sensors are associated with the amplifier components of the multiplexer for specific monitoring the voice levels and in association with the volume controls maintains the voice levels within selected parameters.

Abstract: A control system for an audio amplifier including a control module interconnected by an edge connector to an amplifier to monitor status signals and the audio input and output signals from the amplifier. The control module passes serial data to an interface which interconnects the plurality of control modules and amplifiers to a single host computer. The host computer receives data from the interface and transmits instructions to the interface for routing to the specific amplifier control module to control the amplifier's gain along with other audio functions and a remote power supply. The control module can be set to run in a stand alone mode to regulate the amplifiers thermal dynamic response to the audio signals and prevent thermal clipping.