Fulabs CT14 Micro 4.2 Stereo Bluetooth Power Amplifier Board Module 5VF 5W+5W Mini with Charging Port for Refitting Idle Sound Box

CT14 Bluetooth Audio Amplifier Board Product Description 

I. Product Parameters 

- Product Name: CT14 Bluetooth Audio Amplifier Board 

- Bluetooth Version: 4.2 

- Maximum Operating Current: 5V/2A 

- Recommended Lithium Battery: 3.7V Li-battery (with protection circuit) 

- Dimensions: 40mm × 20mm × 12mm 

- Weight: Approximately 7g 

II. Usage Instructions 

1. Bluetooth Compatibility: Supports Bluetooth 4.2 protocol. 

2. USB Sound Card Support: Plug-and-play USB audio input (driver-free under normal Li-battery power). 

3. Built-in Amplifier: Integrated dual 5W amplifier circuits. Do not connect external amplifiers. Avoid paralleling amplifier outputs or connecting negative terminals together to prevent chip damage. 

4. Speaker Configuration: Connect two 2-8Ω, 3-10W speakers (4Ω/5W or 4Ω/10W recommended) for stereo output. 

5. Power Supply: 

   - For optimal audio quality, use a 5V/2A or higher regulated power supply. Maximum operating current is 5V/2A. 

   - Use a 3.7V Li-battery with built-in protection circuit. The board features a USB charging port for the battery; the USB port can also serve as a power input or connect to a 5V adapter. 

   - Avoid using unstable power sources such as dry batteries, power banks, or multi-functional transformers. 

6. Installation Precautions: Keep the Bluetooth antenna away from metal components during installation to avoid signal interference and ensure maximum transmission range. 

7. Caution: Improper use or connection may damage the product. Refer to the user manual for detailed wiring diagrams and safety guidelines.