A PA(Public Address) system is nothing that amplifies sound so people can hear it clearly. The most basic example might be a megaphone, or single microphone and speaker, used to make someone’s voice louder. These days most PA systems are used for music too.
A few things that affect choices for a PA system include:
|•||The kind of music or speech being played|
|•||How loud it needs to play|
|•||The space where it’s being used|
|•||How portable it needs to be|
|•||Who is running the system|
|•||Desired sound quality and durability|