PAM8406 Class D Dual Channel 2×5W Digital Amplifier Board

PAM8406 Dual Channel 2×5W Class D Digital Amplifier Board

Upgrade your audio projects with the ultra-compact PAM8406 Class D Digital Amplifier Board — a powerhouse stereo audio module that delivers crisp, clean 5W+5W output from a tiny 24mm×23mm footprint. Perfect for DIY speakers, portable audio devices, robotics projects, and any electronics build that demands high-efficiency amplification in a small space.

Made in Mainland China.

Why Choose the PAM8406 Amplifier Board?

• Ultra-Compact Design: At just 24mm × 23mm × 10mm (approx. 0.94″ × 0.91″ × 0.39″), this miniature board slips effortlessly into tight enclosures and digital device interiors.
• Excellent Noise Suppression: Advanced noise-rejection circuitry means zero audible hiss or hum — even with your ear pressed directly against the speaker with no audio input.
• Dual-Channel Stereo Output: Delivers 5W + 5W stereo power on a standard 5V USB supply. Directly drives 4Ω and 8Ω speakers with independent left/right volume adjustment.
• Class D Efficiency, No LC Filter Needed: The unique filterless Class D topology eliminates bulky inductors and capacitors, letting you power the board straight from a computer's USB port.
• Double-Side PCB Wiring: Dual-layer board layout eliminates ground-potential imbalance and channel crosstalk — the most common culprits of poor stereo separation.
• Machine-Soldered for Superior Quality: Every solder joint is applied by automated pick-and-place machinery, ensuring consistent, reliable connections that manual soldering simply can't match.

Technical Specifications

Package Contents

• 1 × PAM8406 Stereo Audio Amplifier Module

Important Usage Notes

⚠️ The negative (−) terminals of the left and right channel outputs must NOT be connected together — doing so will permanently damage the IC. Always connect your speakers (load) before applying power.

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For guidance on electrical safety when working with low-voltage electronics, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: What power supply does the PAM8406 amplifier board require?

A: The PAM8406 digital amplifier board operates on a rated supply voltage of 2.5V to 5V, with a maximum limit of 5.5V. It can be powered directly via a standard 5V USB port from a computer or USB charger, making it incredibly convenient for portable and desktop DIY audio projects.

Q: Can the PAM8406 board drive standard 8-ohm speakers?

A: Yes! The PAM8406 dual channel amplifier board can directly drive both 4Ω and 8Ω small speakers. At 5V supply, it delivers up to 5W per channel (2×5W total stereo), providing ample power for compact speaker enclosures, bookshelf builds, and embedded audio applications.

Q: Does the Class D PAM8406 require an LC output filter?

A: No — one of the key advantages of this PAM8406 Class D amplifier board is its filterless design. It does not require external LC (inductor-capacitor) output filtering, which simplifies your circuit layout, reduces component count, and saves board space. This makes it ideal for ultra-compact electronics builds.

Q: Is the PAM8406 board suitable for DIY and hobbyist electronics projects?

A: Absolutely. The PAM8406 stereo amplifier module is a favorite among hobbyists, makers, and electronics engineers for its small footprint, USB power compatibility, low noise, and easy integration into Raspberry Pi, Arduino, and other microcontroller-based audio systems.