PAM8406 2x5W Class-D Stereo Audio Amplifier Module
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Prices updated: 12 Oct 2026
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About this product
A Class-D stereo amplifier module based on the PAM8406 that drives two 5 W speakers directly, with efficiency up to 90%. It runs from a 5 V USB supply or a battery, and has separate left and right volume potentiometers, which suits DIY audio projects and portable speakers.
Specifications
- Amplifier class
- Class-D
- Output power
- 2 x 5 W
- Supply voltage
- 2.5 V to 5.5 V
- Speaker impedance
- 2 Ω to 8 Ω
- Efficiency
- Up to 90%
- Volume control
- Left and right potentiometers
- Protection
- Short circuit and thermal protection
Frequently asked questions
Can I power the PAM8406 module from an Arduino 5 V pin?
Yes, 5 V is within its operating range. Keep in mind that loud audio draws significant current, so a stable supply such as a good USB power source or a battery is recommended.
Which speakers can I connect to this amplifier?
It is designed to drive speakers with an impedance between 2 Ω and 8 Ω. Use speakers rated for the module's 5 W output, and avoid connecting speakers with a lower impedance than the module supports.
