The PA-1000B is a 30W public address mixer/amplifier with two balanced low-impedance (or unbalanced high impedance) mic inputs, allowing connections of two dynamic microphones. Input three is for connection of any line level source. The unit also features an input from a 600? (0.775V) telephone system paging port. Muting is accomplished via voice activation from Mic1, or telephone input for paging. The PA-1000B has bass and treble controls. A four-tone chime is usable for page pre-announcement. Simple mixer amplifier is ideal for use in reception areas, waiting rooms, factories, education, AV and retail applications. Full range frequency response makes the unit ideal for any voice or background music system.