5V DC Mini Class D Pam8403 USB Power Amplifier BThe 5V Bluetooth Amplifier Module is a compact, high-quality audio solution for wireless music playback. This 5W Mono Class D amplifier ensures efficient power usage and clear sound reproduction. The module features Bluetooth connectivity for seamless wireless streaming and lossless music playback. With a digital power amplifier finished board design, it provides a convenient and ready-to-use solution for audio enthusiasts.oard