PAM8403 Stereo Audio Amplifier Module (3W+3W, 5V)

PAM8403 Stereo Audio Amplifier Module (3W+3W)

Bring powerful, clear stereo sound to your DIY audio projects with the PAM8403 amplifier module. Built around the popular PAM8403 Class-D amplifier IC, this compact black PCB delivers 3W per channel at 5V with minimal heat and excellent efficiency. Whether you're building a Bluetooth speaker, a desktop audio system, or an Arduino-powered music player, this module punches well above its tiny size.

Key Features

• IC: PAM8403 Class-D Stereo Amplifier
• Output Power: 3W + 3W (stereo)
• Supply Voltage: 5V (USB or regulated supply)
• Efficiency: Up to 90% — runs cool without a heatsink
• SNR: >80dB for clean, low-noise audio
• Input: L-IN (Left), R-IN (Right) — differential inputs
• Output: L+ / L− (Left speaker), R+ / R− (Right speaker)
• SW Pin: Shutdown/standby control
• GND & 12V: Power input pads
• Form Factor: Compact black PCB with mounting holes

Typical Applications

• DIY Bluetooth and wireless speakers
• Arduino / Raspberry Pi audio output
• Desktop mini amplifiers
• Portable battery-powered speakers
• Home audio and IoT sound projects