Voice alarm system amplifier is multifunction amplifier that comes with audio inputs including background music input, and speaker output section which has an internal attenuator and 6-output selector. It permits not only general-purpose broadcast, but also emergency broadcast which gives pre-recorded instructions in an emergency situation. Emergency broadcasts can be made from am optional RM-300MF Fireman's Microphone as well as from amplifier and can be remotely controlled from external equipment. In addition, unit features surveillance function which automatically checks system for failures.