PAM 8406 Class D Stereo Amplifier Module

The PAM8406 Class D amplifier module delivers 5W + 5W stereo output at 5V, offering clear sound with low distortion and high efficiency. It’s a great choice for small speaker projects, portable audio, and battery-powered systems.

This module uses the PAM8406 chip and includes built-in protection features such as short-circuit and over-temperature protection. Compatible with 4Ω–8Ω speakers, it supports both volume-adjustable and fixed-gain versions depending on the model.

Compact and easy to use, it's suitable for DIY audio builds and general sound output applications.

Specifications

Chipset: PAM8406
Amplifier Type: Class D
Output Power: 5W + 5W (at 5V, 4Ω speakers)
Operating Voltage: 2.5V to 5.5V DC
Speaker Impedance: 4Ω to 8Ω
Efficiency: Up to 90%
Total Harmonic Distortion (THD): <10% at 1kHz, 1W
Audio Input Type: Stereo (left and right)
Volume Control: Some versions include onboard potentiometer
Protection: Built-in short-circuit and thermal protection
PCB Size:  24 x 23 x 105 mm (L x W x H)
Application: Portable speakers, DIY audio, embedded sound systems