

PAM8403 Digital Audio Amplifier Module
- Dual channel 3W + 3W stereo output
- Class D digital power amplifier technology
- Wide operating voltage: 2.5V to 5.5V
- High amplification efficiency of 85%
- Compact board size: 24 x 15 mm
- Supports 4 ohm and 8 ohm small speakers
- USB powered (5V) compatible
- Excellent noise suppression and sound quality
- Unique LC-filterless design
- Ideal for portable DIY audio projects
Product Details
PAM8403 Digital Audio Amplifier Module
The PAM8403 Digital Audio Amplifier Module is a high-efficiency Class D audio power amplifier designed for compact audio applications. Capable of delivering 3W+3W of stereo output, this module is the perfect solution for driving small 4-ohm or 8-ohm speakers in DIY projects.
Operating between 2.5V and 5.5V, the module is highly versatile and can be powered directly via a computer USB port or a battery. Its unique filterless design and 85% efficiency make it a top choice for makers looking to integrate high-quality sound into portable devices.
🔧 Key Features
- Amplification Type: Class D Digital
- Output Power: 3W + 3W (at 4 ohm)
- Operating Voltage: 2.5V to 5.5V
- Efficiency: 85% High Efficiency
- Speaker Compatibility: 4Ω / 8Ω
- Noise Suppression: Integrated good sound quality
- Design: Filterless Class D
- Power Source: USB or Battery
💡 Applications & Use Cases
- Portable Bluetooth speakers
- DIY audio projects and sound systems
- Arduino-based audio output devices
- Repairing or upgrading small audio gadgets
- Desktop mini-speaker systems
⚙️ Technical Specifications
| Parameter | Value |
| Model | PAM8403 |
| Channels | 2 (Stereo) |
| Output Power | 3W + 3W |
| Voltage Range | 2.5V - 5.5V |
| Efficiency | 85% |
| Board Dimensions | 24mm x 15mm |
📦 Package Includes
- 1 × PAM8403 Digital Audio Amplifier Module
















