Provides performance as a 2.1 channel amplifier board and is easy to install and use. Bluetooth amplifier module is a suitable replacement for damaged modules in existing 2.1 channel systems. Two input methods supported: Bluetooth input and AUX input for flexible connectivity. Replacement of the 2.1 channel amplifier module is convenient, delivering a stable and fast connection with wide compatibility. Key attributes: 2.1 channel audio, easy installation, Bluetooth and AUX inputs, reliable connection, broad compatibility. Use scenario: a faulty module in a home stereo or desktop speaker setup to restore wireless streaming and wired playback. Use scenario: integrate into a DIY speaker project to add Bluetooth and AUX input options for versatile music listening. Use scenario: enhance a small living room or entertainment setup by providing wireless audio streaming from phones, tablets, or other Bluetooth devices.