[al-hu]

A monitor and an amplifier are two different equipment with different functions in a sound system.

1. Monitor: A monitor is a device used by performers to hear the sound they are producing while performing on stage. It helps them to adjust their pitch, rhythm, and general performance. Monitors are placed in front of the performer, often on the stage floor or on a stand, and are generally smaller than main speakers because they are intended for use by a single performer rather than an entire audience.

2. Amplifier: An amplifier is an electronic device that increases the volume of an electric signal. It is used to boost the low-level audio signal from a source device, such as a mixing console, CD player, or even a smartphone, to a level that can drive a loudspeaker. The amplifier does not affect the sound itself, but only makes it louder.

In a simple terms, a monitor helps a performer