PAM8403 5V Stereo Audio Amplifier Module | Mini Class-D 3W+3W Dual Channel Amp Board for DIY Bluetooth Speaker & Arduino Projects

Technical Specifications

• Amplifier IC: PAM8403
• Amplifier Type: Class-D Stereo Audio Amplifier
• Operating Voltage: 5V DC
• Output Power:
  • 3W + 3W @ 4Ω speaker
  • 2W + 2W @ 8Ω speaker
  • Number of Channels: 2 (Stereo)
• Efficiency: Up to 90%
• Input Type: Analog audio (L/R + GND)
• Speaker Impedance: 4Ω – 8Ω
• THD+N: ≤ 0.1%
• Protection: Thermal & short-circuit protection
• PCB Size: Compact mini board
• Heat Sink Required: No (high efficiency)
• Applications:
  • DIY Bluetooth speaker
  • Arduino / Raspberry Pi audio projects
  • Portable audio systems
  • MP3 player amplification
  • Home audio DIY projects
    
    
    

Technical Description

The PAM8403 5V Two-Channel Stereo Mini Class-D Audio Amplifier Module is a compact, high-efficiency audio solution ideal for DIY electronics and portable speaker projects. Powered by the PAM8403 IC, this amplifier delivers 3W + 3W stereo output while consuming minimal power and producing very low heat.

Designed to operate directly from a 5V DC supply, the module works perfectly with USB power, Arduino, Raspberry Pi, Bluetooth audio modules, and MP3 players. Thanks to its Class-D architecture, it offers excellent sound clarity, low distortion, and up to 90% efficiency, eliminating the need for a heat sink.

This mini amplifier board is an excellent choice for DIY Bluetooth speakers, home audio experiments, educational electronics projects, and portable sound systems.