What is a PA amplifier?

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Tags

1. #amplify
2. #usually
3. #human
4. #example
5. #loudspeaker
6. #better
7. #airplane
8. #designed
9. #auditorium
10. #heard
11. #sound
12. #drive
13. #audio
14. #accurately
15. #classroom
16. #voice
17. #amplifier
18. #unamplified
19. #large