Here’s an example of a PA for a band consisting of drums, bass, two electric guitars, a keyboard, and vocals.

This setup is a PA for a guitar and keyboard accompanying a vocalist.

Here, the PA is for amplification in a meeting, using four microphones to allow many people to express their opinions.

This PA is for an event where a DJ will be performing. In addition to a DJ mixer, we will also connect playback equipment such as an iPod.

A microphones is a device that converts sound into electrical signals. There are many types of microphone available for lots of different applications.

A variety of cables and connector types are used to transmit signals for different equipment and applications.

There are several different types of mixer, including analog mixers, digital mixers, and powered mixers.

There are a variety of power amplifiers, including stand-alone power amplifiers , powered speakers, and powered mixers.

There are many different kinds of speaker, both passive speakers and self-powered speakers.

Reverberation is an effect that brings out the depth and width of sound by adding numerous subtle echoes.

Compressors are effects that narrow the dynamic range (the difference between loud and quiet sounds) by compressing sound.

Equalizers are effects that adjust tone by boosting and attenuating specific frequencies.