2x50W TPA3116 Bluetooth 5.0 Mini Digital Power Amplifier Board with Switch and Adjustable Volume with Case

The potentiometer adjusts the volume with a switch for easy volume control, making it ideal for DIY speakers. If it's a metal enclosure, you'll need to extend the Bluetooth antenna. The copper DC connector is used to withstand high current without overheating. The 470uF 35V solid capacitors ensure energy storage and heat dissipation; a stable power supply is essential for good sound quality. A free DC power cable is included, compatible with this product's input power interface. Even if you don't have a DC power adapter or battery, it can be easily wired. Bluetooth 5.0 provides higher transmission efficiency and a longer transmission range.