PAM8403 5V Mini Stereo Amplifier Board 3W+3W Volume Switch Module

🔧 PAM8403 5V Mini Stereo Amplifier Board | AuscomTech

This PAM8403 mini stereo amplifier board is a compact 5V audio module for small speaker and DIY sound projects.

It delivers up to 3W + 3W dual-channel output from a regulated DC 5V supply, making it suitable for portable speakers, alarms, toys, audio repairs, and embedded sound systems.

The onboard switch potentiometer provides direct volume adjustment and power on/off control without requiring a separate external switch.

⭐ Key Features

• Dual-Channel Output – drives left and right speakers for compact stereo audio projects
• DC 5V Power Input – suitable for regulated 5V project power supplies and battery-powered builds
• 3W + 3W Audio Output – provides clear sound for small speakers when used with a suitable power source
• Switch Potentiometer – combines volume adjustment and power switching in one onboard control
• Compact Board Size – easy to fit into small enclosures, speaker boxes, toys, radios, and DIY projects
• Simple Wiring Layout – labelled pads for power input, audio input, and speaker outputs
• Onboard Filter Capacitor – 470uF capacitor helps support stable amplifier operation

📊 Technical Specifications

• Amplifier IC: PAM8403
• Board Type: mini stereo digital amplifier module
• Power Supply: DC 5V
• Output Power: 3W × 2
• Audio Input: left, ground, right
• Speaker Output: left channel and right channel bridge outputs
• Control: onboard switch potentiometer
• Filter Capacitor: 470uF solid-state capacitor
• PCB: 1.6mm fibreglass board
• Board Size: approx. 27.9 × 19.9 × 15mm, excluding protruding potentiometer shaft

🧩 Typical Applications

• Mini speaker projects
• Portable DIY audio builds
• Bluetooth speaker projects
• Arduino and microcontroller sound output
• Alarm and notification speakers
• Small toys, radios, and audio repairs
• Embedded stereo sound systems

⚠️ Important Notes

• This board does not include a USB socket.
• Requires a stable regulated DC 5V power supply connected to the power input pads.
• Power supply, audio cable, and speakers are not included.
• Use speakers suitable for the amplifier output rating.
• Do not connect speaker negative outputs to power ground.
• This amplifier uses bridge-tied speaker outputs, so each speaker must connect only to its matching output terminals.
• Audio input should come from a low-level signal source, not from amplified speaker outputs.

📦 Package Includes

• 1 × PAM8403 5V Mini Stereo Amplifier Board with Switch Potentiometer

🔗 Recommended Accessories (Not Included)

• Regulated 5V power supply – provides board power
• Small 4Ω or 8Ω speakers – suitable audio output load
• 3.5mm audio breakout cable – connects phone, PC, or Bluetooth module audio
• Jumper wires – for testing and project wiring