DF Robot's DFR0719 is a high-quality audio module with Bluetooth V5.0 & BLE capability and a 3.7-24VDC amplifier. It features an intelligent power-saving technology that ensures low power consumption with high audio quality, and is ideal for audio applications such as music playback, microphone input, and sound recording. The module also includes a built-in powerful amplifier, filter, and preamplifier, as well as adjustable gain switches. With a compact size and easy jumper control, it is suitable for use in a variety of applications. Moreover, the module also offers performance customization via its digital and analog interfaces.