TOA A-1812 AS is a 120W PA Amplifier designed for paging announcements, intercommunications, BGM, and broadcasting in various settings like schools, offices, and shops. It features priority control for emergency announcements, a chime function, and two zone selector switches for directing audio to specific areas. The power remote control function allows for synchronized power control with compatible devices like the P-1812. With multiple input options, including microphone, auxiliary, and emergency inputs, it offers versatile connectivity for various audio sources.