1Excellent PVC Material: This digital amplifier board is made of excellent PVC material, which is sturdy and wear resistant, not easy to be damaged, and has a long service life. 2Safe And Reliable: This digital amplifier board integrates self protection circuits, which include over voltage, under voltage, over temperature, DC detection and short circuit protection. 3CSR8635.4 Version Bluetooth Module: This digital amplifier board adopts CSR8635.4 version Bluetooth module for stable connection. 4Compact And Lightweight: This digital amplifier board is small and lightweight, which makes it very easy to install and replace. 5Wide Application: This digital amplifier board has a wide range of applications and can be used for stereo and mixing consoles. 1 x Digital Power Amplifier Board