+A **PA System** (Public Address system) gathers and amplifies sound, projecting voices and music to a crowd. It typically links a [Microphone](/wiki/microphone) to an [Amplifier](/wiki/amplifier) and loudspeakers, enabling clear communication in large venues or open areas.
+## See also
+- [Speaker](/wiki/speaker)
+- [Sound System](/wiki/sound_system)
+- [Live Music](/wiki/live_music)
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