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  • PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino
  • PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino
  • PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino
  • PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino
  • PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino
  • PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino
PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino

PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino

  • >= 1 Pieces
    $0.65
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PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Stereo Audio Amplification: The PAM8403 module delivers 3W x 2 channels of clear, distortion-free audio output, ideal for powering small to medium speakers in stereo configurations.
  • Versatile Power Input: Supports USB/DC 2.5V to 5V power supply, enabling compatibility with batteries, Arduino boards, and other low-voltage systems.

Key features

  • 1. Advanced Material Technology

    • With the PAM8403 high-performance audio IC and dual integrated circuits, ensure clear, distortion-free sound and stable operation under varying load conditions.

  • 2. Interactive Design for Customization

    • With the built-in potentiometer, you can manually adjust output levels to optimize sound quality for your specific setup.

  • 3. Versatile Performance Parameters

    • Deliver 3W per channel output with a wide voltage compatibility (2.5V-5V), enabling use in diverse power environments compared to modules limited to 5V only*

  • 4. Scenario Solutions for DIY and Electronics Projects

    • Designed for Arduino integration and Bluetooth speaker applications, this module is ideal for building custom speakers, portable audio systems, or integrating stereo amplification into electronic devices.

  • 5. Modular Design for Flexibility

    • With jumper headers and a terminal block, customize functionality and wiring configurations to adapt to different projects, offering greater adaptability than rigid, pre-configured modules*

Product details

PAM8403 3W*2 Mini Digital Power Audio Amplifier Board DIY Stereo USB DC 2.5V To 5V Power bluetooth speaker module for arduino

The PAM8403 3W*2 Mini Digital Power Audio Amplifier Board is a compact, versatile module designed for DIY audio projects. It supports stereo output with a wide voltage range (2.5V–5V DC), making it ideal for portable speakers, Arduino-based systems, and Bluetooth integration. Its modular design allows customization via jumper headers and a potentiometer for adjustable output control.

Technical specifications

FeatureSpecificationApplication Scenario
Audio ChipPAM8403 (High-Fidelity Stereo Amplifier)Ensures clear, distortion-free audio for speakers and headphones
Power Output3W × 2 (Stereo)Powers small to mid-sized speakers or portable devices
Power InputDC 2.5V–5V (USB/DC Jack)Compatible with batteries, USB power banks, or Arduino boards
Terminal Block3-Wire ConnectionSimplifies wiring for quick setup in projects
Adjustable OutputPotentiometer for Volume ControlCustomizable audio levels for precise tuning
Protection FeaturesOverheat/Short-Circuit ProtectionSafeguards against component damage in harsh environments

Customization guide

Adjustable parameters include:

  • Voltage Configuration: Use jumper headers to optimize input voltage for specific power sources.
  • Output Power Tuning: Modify the potentiometer to match speaker impedance or desired volume levels.
  • Module Expansion: Add external components via jumper headers for advanced features like Bluetooth pairing or noise cancellation.

Get inspired

Turn your ideas into reality with this compact amplifier board. Perfect for upgrading DIY speakers, creating smart home audio systems, or adding sound to robotics projects. Its modular design ensures adaptability for both beginners and seasoned engineers.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Power Output3W × 25W × 2 (+67%)10W × 2 (+233%)*
Bluetooth VersionNo Built-in BTBluetooth 5.0Bluetooth 5.3 + NFC
Protection FeaturesBasic (Overheat)Overheat/Short-CircuitOverheat/Short-Circuit + Water Resistance
CompatibilityArduino/USBArduino/USB/ESP32Multi-Platform (All IoT)

Supplier's note

  1. Technical Breakthroughs:

    • The PAM8403 chip delivers 20% lower distortion than standard amplifiers, ensuring clearer audio.
    • Wider voltage tolerance (2.5V–5V) enables compatibility with diverse power sources, outperforming modules limited to 3.3V/5V.
    • Adjustable output via potentiometer allows users to fine-tune audio levels for specific applications, a feature lacking in many entry-level modules.

  2. Optimal Version Selection:

    • Base Model: Ideal for hobbyists building basic speakers or integrating sound into Arduino projects. Its simplicity and affordability make it a go-to for prototyping.
    • Advanced Model: Perfect for professionals needing Bluetooth 5.0 for seamless wireless pairing and higher power output (5W × 2) for mid-sized speakers.
    • Pro Model: Targets commercial applications requiring 10W × 2 power and advanced features like NFC pairing and water resistance. For instance, its triple-layer protection ensures reliability in outdoor or industrial setups.

Pro Model’s 10W output exceeds industry benchmarks by 233%, enabling louder, distortion-free audio for high-demand scenarios like outdoor events. Pair this with its water-resistant coating to ensure durability in unpredictable environments.

Frequently asked questions

  • Which PAM8403 audio amplifier board suits Arduino projects?

  • Can the PAM8403 board power a Bluetooth speaker?

  • How to clean the terminal block connections?

  • Can I customize the output voltage on this board?

  • Is the PAM8403 module compatible with 3.7V lithium batteries?

  • Can I add external components to the PAM8403 board?

  • Does the PAM8403 board support stereo audio output?

  • How does the PAM8403 compare to other 3W audio modules?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Power OutputPortable speakers, home audio systemsIndustry: 2W2
Our Base: 3W2 (▲)
Our Advanced: 5W*2 (▲▲)		Base: 50% louder than industry standard (ISO 26101)
Advanced: 25% louder than Base		Base: 50% higher power consumption
Advanced: Requires larger batteries (▲▲)
Noise LevelProfessional studios, audiophile setupsIndustry: 50 dBA
Our Base: 45 dBA (▲)
Our Advanced: 40 dBA (▲▲)		Base: Quieter than a whisper (IEC 60704)
Advanced: 20% lower noise than Base		Advanced: Heatsink adds 20% bulk (▲▲)
Input Voltage RangeBattery-powered devices, IoT projectsIndustry: 3V–5V
Our Base: 2.5V–5V (▲)
Our Advanced: 1.8V–5V (▲▲)		Base: Works with 18650 batteries (▲)
Advanced: Compatible with solar panels (▲▲)		Advanced: Slightly reduced efficiency at lower voltages (▲▲)
Modularity/CompatibilityDIY projects, robotics kitsIndustry: Limited to 2 interfaces
Our Base: 5 interfaces (Arduino/USB/etc.)
Our Advanced: 8 interfaces (▲▲)		Base: Supports 50% more devices than industry (▲)
Advanced: Universal adaptability (▲▲)		Advanced: Requires advanced soldering skills (▲▲)
Customization OptionsIndustrial control systems, prototypingIndustry: Fixed settings
Our Base: 4 jumper presets
Our Advanced: 12 presets (▲▲)		Base: 30% faster setup than industry (▲)
Advanced: Full parameter tuning (▲▲)		Advanced: Steeper learning curve (▲▲)
Thermal ManagementHigh-power applications, automotive audioIndustry: No thermal protection
Our Base: Auto shutdown at 85°C (▲)
Our Advanced: Active cooling (▲▲)		Base: 40% lower failure risk (▲)
Advanced: 2× longer lifespan under load (▲▲)		Advanced: Adds 15% to cost (▲▲)

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