1. This product uses the PAM8403 chip, which has good performance and is more stable. 2. Good material, powerful functionality, and high fidelity sound quality. 3. Supports dual channel amplifiers and supports 3W+3W. 4. Upgrade the interface, making the Type-C power interface more applicable. 5. It has a wide range of applications and can be widely used in equipment such as speakers and speakers. Product name: Mini Bluetooth amplifier board Input voltage: DC 5V Output power: 3W+3W Output impedance: 4-8 Chip type: Bluetooth chip Chip model: PAM8403 Audio input: BT BT version: 5.0 Number of channels: Dual channel Input interface: Type-C connector Output interface: 2.54 needle pitch 4 needle socket Specifications: A:1 set Color: White Material: PCB Package Contents: 1 * Bluetooth Digital Amplifier Board 1 * Type-C cable 1 * XH-4P cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.