PAM8403 Bluetooth 5.0 Stereo Amplifier Board 2×5W Dual Channel DIY

PAM8403 Bluetooth 5.0 Stereo Amplifier Board — Crystal-Clear 2×5W Dual Channel

Take your DIY audio projects to the next level with this compact PAM8403 Bluetooth 5.0 Audio Power Amplifier Board. Delivering crisp, distortion-free stereo sound at up to 5W per channel, this mini module is the perfect heart for custom wireless speakers, desktop audio builds, and electronics maker projects. Simply power it via USB (DC 5V), pair your device over Bluetooth 5.0, and enjoy room-filling stereo audio — no complicated wiring required.

Key Features

• Bluetooth 5.0 Wireless Connectivity — Stable, low-latency pairing with phones, tablets, laptops, and more
• PAM8403 Chip — Industry-trusted amplifier IC delivering ultra-clear, low-noise audio output
• 2×5W Dual-Channel Output — True stereo amplification for immersive, balanced sound
• Compact & Lightweight — 45×42×25 mm footprint and just 22 g make it easy to integrate into any enclosure
• DC 5V Supply — Powers conveniently from any standard USB power source
• 4× Signal Magnification — Amplifies even weak audio inputs to full, clear output
• Easy Mounting — Pre-drilled installation holes (38×35 mm spacing) for secure, tool-friendly integration
• DIY-Friendly Design — Ideal for makers, hobbyists, and electronics enthusiasts

Specifications

Troubleshooting Tips

• Bluetooth indicator not flashing normally? — A steady or irregular light may indicate a pairing issue. Try resetting the board and re-pairing your device.
• Laptop won't connect? — If your phone connects fine but your laptop doesn't, update or reinstall your computer's Bluetooth drivers to restore compatibility.
• Sound distorts at high volume? — This can occur if the power supply is insufficient or the connected speakers are mismatched. Ensure your USB source provides stable 5V output.
• Background noise? — Some low-level hiss is normal in signal amplification. If noise is excessive, check your power supply quality and cable shielding.

What's in the Box

• 1 × PAM8403 Bluetooth 5.0 Audio Power Amplifier Board

Note: Colors may vary slightly due to monitor settings and lighting. Please allow ±1–2 cm measurement tolerance due to manual measurement.

For further reading on electronics safety standards for audio equipment, visit the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Audio power amplifier

Frequently Asked Questions

Q: What speakers are compatible with the PAM8403 Bluetooth amplifier board?

A: The PAM8403 amplifier board is designed for passive speakers (those without a built-in amplifier). It outputs up to 5W per channel, so it works best with small to medium passive speaker drivers rated at 4–8 ohms. Ensure your speakers' power handling matches the board's output to avoid distortion.

Q: How do I power the PAM8403 amplifier board?

A: The board operates on DC 5V, which can be supplied via a standard USB power adapter, a USB power bank, or any regulated 5V DC source. Make sure your power supply can deliver sufficient current (at least 1–2A recommended) for stable, clean audio output.

Q: Can I use this amplifier board with both Android and iOS devices?

A: Yes! The Bluetooth 5.0 connectivity is universally compatible with Android smartphones, iPhones, tablets, Windows laptops, and most other Bluetooth-enabled devices. Simply enable Bluetooth on your device, search for the board, and pair to start streaming audio wirelessly.

Q: Is this board suitable for beginner DIY electronics projects?

A: Absolutely. The compact design, standard mounting holes, and simple DC 5V power requirement make this board very beginner-friendly. It's a popular choice for custom speaker enclosures, desktop audio stations, and maker projects requiring stereo wireless audio amplification.