PAM8403 Mini Stereo Audio Amplifier Module — 3W+3W, 5V

PAM8403 Mini Stereo Audio Amplifier Module — 3W+3W, 5V, Class D

The PAM8403 mini stereo audio amplifier module delivers 3W+3W stereo output from a single 5V USB supply using the efficient Class D PAM8403 amplifier IC. With filterless output, low THD, and high efficiency (>85%), it is the ideal amplifier module for portable speaker projects, Arduino audio systems, and any application requiring compact stereo amplification from a 5V source.

The on-board volume potentiometer provides manual volume control, and the 3.5mm stereo input jack accepts audio from phones, computers, and Arduino DAC outputs. Powered directly from USB or any 5V supply — no external power supply required for most applications.

Key Specifications

• IC: PAM8403 | Class: Class D (filterless)
• Output power: 3W + 3W (stereo) at 4Ω load, 5V
• Supply voltage: 2.5V–5V DC | Efficiency: >85%
• THD: <0.1% at 1W | SNR: >80dB
• Input: 3.5mm stereo jack | Output: 2× speaker terminals
• Volume control: On-board potentiometer
• Compliance: RoHS

Why Choose PAM8403?

• ✅ 3W+3W stereo from 5V — USB-powered, no external power supply needed
• ✅ Class D efficiency (>85%) — minimal heat generation, ideal for battery-powered projects
• ✅ Filterless output — connect speakers directly without output filter inductors
• ✅ On-board volume pot — manual volume control without external components
• ✅ 3.5mm stereo input — connect any audio source directly
• ✅ Compact module — minimal footprint, easy to integrate into enclosures

Typical Applications

• Portable Bluetooth speaker builds
• Arduino audio output amplification
• DFPlayer Mini and MP3 module speaker driver
• Desktop mini speaker systems
• Raspberry Pi audio output amplification
• DIY stereo amplifier projects

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

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