A Public Address (PA) system is an electronic sound amplification and distribution setup that uses microphones, amplifiers, and loudspeakers to address large areas or audiences. Commonly used in places like schools, malls, airports, bus and train terminals, it enables clear announcements and communication across wide spaces.
The system may also include components like mixing consoles for managing music and speech, allowing sound from a person or recorded source to be distributed effectively throughout a venue. PA systems are essential for public, institutional, and commercial buildings to ensure efficient communication and crowd management.