This module embeds a digital amplifier chip, PAM8403. It can control up to 2 3-watts speakers. The potentiometer is for manual volume control and can even switch off the speakers.

This module also provides low total harmonic distortion plus noise (THD+N) that creates a high-quality sound output. It also allows the module to drive the speaker directly with its filter-less design. It can be operated with a 2.5V to 5.5V power supply. 

This module has built-in short circuit protection and has a thermal shutdown that acts when the module reaches a certain

temperature.