Answer:
The basic components of a PA system include:
Input devices: Microphones, wireless microphones, music players, and other devices that generate audio signals.
Mixer: A mixer combines the audio signals from multiple input devices and controls their volume and other parameters.
Amplifier: An amplifier increases the power of the audio signals from the mixer so that they can be heard by a large audience.
Speakers: Speakers convert the amplified audio signals back into sound waves.