Compact and Powerful: The PAM8403 Mini Digital Amplifier Board is a highly efficient Class D audio amplifier, perfect for creating your own sound systems. It delivers a robust 2x3W output, ensuring clear and powerful sound USB Powered: This amplifier can be conveniently powered by a USB connection (2.5V to 5V), making it versatile for use in various portable applications DIY Friendly: With its super mini design, this board is ideal for DIY audio projects, allowing easy integration into your custom setups Energy Efficient: Operates with high efficiency, minimizing power waste and ensuring reliable performance without overheating High-concerned chemical:None Type:Logic ICs Color:As Shown Material:PCB Package Contents: 10 * PAM8403 Digital Amplifier Board 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.