Peavey MA Series Module MPT-X Auto is a transformer balanced automatic mic preamp with screw terminals and muting capabilities. It features an input sensitivity control that varies the overall output level and threshold controls that adjust the gate sensitivity. The module can be set up for mute master or mute slave capability, allowing a selected input to mute other inputs if desired. It provides a close approximation of theoretical NOM gain correction, ensuring a consistent margin before feedback when operating multiple microphones in the same acoustic space as sound reinforcement speakers.