5V Class D PAM8403 USB Power Amplifier Board

5V Class D PAM8403 USB Power Amplifier Board is a compact, high-efficiency stereo audio amplifier module designed for portable and low-power audio applications. Based on the popular PAM8403 Class-D amplifier IC, this board delivers clear and powerful stereo sound while consuming minimal power. With USB-based 5V power input, it offers exceptional convenience for DIY audio projects, embedded systems, and compact speaker solutions.

Engineered for high efficiency and low heat dissipation, the PAM8403 amplifier board is capable of driving two 3W speakers at 4Ω with impressive audio clarity. Its Class-D architecture ensures efficient operation without the need for bulky heat sinks, making it ideal for space-constrained designs. Whether you are building a portable Bluetooth speaker, multimedia system, or educational audio project, this amplifier board provides reliable and distortion-free audio amplification.

Key Features of 5V PAM8403 USB Power Amplifier Board

• High-Efficiency Class D Amplification
  Utilizes Class-D technology for excellent power efficiency (up to 90%), minimizing energy loss and heat generation.

• Stereo Output – 3W + 3W
  Delivers up to 3 watts per channel when driving 4Ω speakers at 5V supply.

• USB Powered (5V Input)
  Easily powered via USB port, power bank, or 5V DC adapter for hassle-free integration.

• Compact & Lightweight Design
  Small form factor allows easy installation in portable and embedded audio applications.

• Low Distortion & Noise
  Provides clean audio output with low Total Harmonic Distortion (THD), suitable for music and voice playback.

• No Heat Sink Required
  Efficient operation eliminates the need for external heat sinks.

• Wide Speaker Compatibility
  Supports 4Ω to 8Ω speakers, making it versatile for different audio setups.

• Built-In Protection Features
  Includes short-circuit and thermal protection for safe and reliable operation.

Technical Specifications – PAM8403 USB Amplifier Board

• Amplifier IC: PAM8403

• Amplifier Type: Class D Stereo Audio Amplifier

• Operating Voltage: 5V DC

• Power Supply: USB or 5V DC input

• Output Power: 3W × 2 (at 4Ω, 5V, 10% THD)

• Speaker Impedance: 4Ω – 8Ω

• Number of Channels: 2 (Stereo)

• Efficiency: Up to 90%

• Total Harmonic Distortion (THD): < 0.1% (at nominal output)

• Frequency Response: 20Hz – 20kHz

• Board Size: Compact, lightweight PCB

• Operating Temperature: –20°C to +70°C

Note: Output power and performance may vary depending on power supply quality and speaker impedance.

Applications of 5V PAM8403 USB Power Amplifier Board

Thanks to its compact size, efficiency, and ease of use, the PAM8403 USB amplifier board is widely used in a variety of audio and embedded applications:

• Portable Bluetooth Speakers
  Ideal for DIY Bluetooth speaker projects when paired with a Bluetooth audio receiver module.

• USB-Powered Audio Systems
  Perfect for desktop USB speakers, laptops, and multimedia audio accessories.

• DIY Electronics Projects
  Popular among hobbyists, makers, and students for learning audio amplification concepts.

• Embedded Audio Systems
  Suitable for Arduino, Raspberry Pi, ESP32, and other microcontroller-based projects requiring audio output.

• Home Audio Enhancements
  Used in small speaker boxes, intercom systems, and notification speakers.

• Educational & Training Kits
  Excellent choice for electronics labs, workshops, and hands-on audio experimentation.

• Toys & Portable Devices
  Integrated into battery-powered toys, radios, and compact entertainment devices.

Why Choose the PAM8403 5V USB Amplifier Board?

The 5V Class D PAM8403 USB Power Amplifier Board offers the perfect balance of performance, efficiency, size, and affordability. Its USB power compatibility, stereo output, and low distortion make it a preferred solution for modern portable audio applications. With minimal external components required, this amplifier board simplifies design while delivering high-quality sound.

Whether you are a DIY enthusiast, educator, or product developer, the PAM8403 amplifier board provides a reliable and cost-effective solution for compact audio amplification needs.

Package Includes:

1 x 5V Class D PAM8403 USB Power Amplifier Board

FAQ

1. Where can we buy this 5V Class D PAM8403 USB Power Amplifier Board?

This product is available online https://aiiottech.in/product/5v-class-d-pam84…-amplifier-board/ and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103

2. When can I get this 5V Class D PAM8403 USB Power Amplifier Board after placing the order?

RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.

Video Link: PAM8403-H34 | PAM8403 2X3W Mini Audio Class D amplifier board