PAM8403 Mini 5v Digital Amplifier Board With Switch Potentiometer

The PAM8403 is a 3 W stereo Class D amplifier that runs from a 5 V USB power supply — making it the perfect audio output stage for Raspberry Pi, Arduino, and any USB-powered project. Onboard potentiometer and power switch make it a complete, self-contained stereo amplifier module.

🔹 Key Applications

• Raspberry Pi audio output amplifier

• USB-powered portable stereo speaker builds

• Arduino media player audio output

• 5 V embedded stereo speaker system

• Desk speaker powered from USB port

• IoT device audio output stage

🔹 Why Choose This Module?

• 5 V USB power — works from any USB port or power bank

• 3 W × 2 stereo Class D — clear, loud audio from small speakers

• Onboard volume potentiometer and power switch — no extra components

• Filterless output — reduces BOM and simplifies PCB design

• PAM8403 — Diodes Inc. precision Class D IC

🔹 Technical Specifications

• Chipset: PAM8403

• Supply Voltage: 5 V DC (USB)

• Output Power: 3 W × 2 (stereo)

• Efficiency: Class D (>85%)

• Controls: Volume potentiometer + power switch

• Load: 4 Ω – 8 Ω

🔹 What's Included

1 × PAM8403 5V Stereo Class D Amplifier Module

🔹 Pro Tip

💡 Pair with an 8 Ω 3 W speaker on each channel for optimal output. At 5 V the output stays clean — don't exceed the rated supply voltage. This is the most common amplifier module for Raspberry Pi speaker projects and pairs directly with the Pi's 3.5 mm audio jack.

⚠️ Note: Always ensure proper heat dissipation and correct voltage configuration before powering connected devices.