The 280MA mixer/amplifier from Crown Audio offers terrific sound quality and reliability, ideal for paging and background music in offices, schools, hospitals, retail stores, and other similar venues. It is a 2 x 80W unit designed for two-zone systems, and offers 4 ohm, 70 volt, and 100 volt outputs to meet your needs. It also features protection circuitry to prevent against damage from overheating, overloads, or short circuits.