3W DC 3.7V–5V Digital Audio Amplifier Board | DIY Bluetooth Speaker
3W DC 3.7V–5V Digital Audio Amplifier Board | DIY Bluetooth Speaker
DC 3.7V–5V 3W Dual-Channel Digital Audio Amplifier Board
Upgrade your DIY audio projects with this compact 3W digital audio amplifier board. Designed for makers, hobbyists, and electronics enthusiasts, this dual-plate module delivers clear, punchy sound from a tiny footprint. Whether you're building a custom Bluetooth speaker, modifying an existing sound system, or prototyping a new audio device, this board offers reliable amplification at low operating voltages — perfect for battery-powered builds.
Key Features
- Wide input voltage: Operates on DC 3.7V to 5V — compatible with single-cell LiPo batteries and USB power sources
- 3W output power: Delivers clear, full audio output suitable for small to medium enclosures
- Dual-plate (double) design: Stereo-capable layout for richer, more immersive sound reproduction
- Bluetooth speaker modification ready: Ideal for upgrading or building DIY Bluetooth speaker projects from scratch
- SMD package: Surface-mount construction ensures a compact, lightweight board for space-constrained builds
- Wide operating temperature: Rated from -40°C to +85°C for reliable performance across environments
- No high-concern chemicals: Safe materials for home workshop use
- Condition: Brand new
Specifications
| Supply Voltage | DC 3.7V – 5V |
| Output Power | 3W |
| Dissipation Power | 5W |
| Package Type | SMD (Surface Mount) |
| Operating Temperature | -40°C to +85°C |
| Quantity | 1 piece |
| Country of Origin | Made in Mainland China |
Who Is This For?
This amplifier board is a go-to choice for electronics hobbyists, DIY audio enthusiasts, students working on audio engineering projects, and anyone looking to breathe new life into a speaker build. Its low-voltage operation and compact SMD form factor make it equally at home in a portable Bluetooth speaker or a desktop audio mod.
Related Products You May Like
- Cordless Rechargeable Milk Frother – Coffee Foam & Egg Whisk
- Electromagnetic Induction Tester – Coil & Circuit Fault Detector
- Air Compressor Pressure Gauge 0-10/0-12/0-25 Bar | DIY Tool
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: What voltage should I use to power this digital audio amplifier board?
A: This amplifier board supports a supply voltage range of DC 3.7V to 5V. A single-cell LiPo battery (3.7V) or a standard USB 5V power source both work perfectly, making it highly versatile for portable and desktop DIY audio builds.
Q: Can I use this board for a DIY Bluetooth speaker project?
A: Absolutely. This 3W digital audio amplifier board is specifically designed for Bluetooth speaker modification and DIY speaker builds. Simply pair it with a Bluetooth receiver module and a compatible speaker driver to create a fully custom wireless audio device.
Q: Is this amplifier board suitable for stereo output?
A: Yes. The dual-plate (double channel) design supports stereo audio output, allowing you to drive two speaker channels simultaneously for a fuller, more immersive listening experience in your DIY audio projects.