• The AL-11P is a versatile mixer pre-amplifier with 4 microphone inputs, 3 auxiliary inputs, 2 emergency inputs (high priority) and mute function. • MIC1, EMC1, EMC2 are priority inputs, automatically muting all other signal inputs. MIC1 has the highest priority, able to suppress all other inputs. • With bass and treble control, automatic mute function for paging and individual gain control for all the inputs.