General description The 12V 24V 220V HIFI Bass Power Amplifier Board is designed for audiophiles, featuring a high-quality Bluetooth-compatible module that allows for adjustable sound effects. It includes dual USB ports for connecting devices and supports microphone output, making it versatile for various audio applications. Technical specifications Voltage: AC110V Plug Type: US Plug Bluetooth-compatible Version: 4.2 Bass Adjustment: Supported FM Radio: Supported Channel: Mono stereo Microphone: Supported Power Consumption: Low Measurement Error: +/- 1-3cm Compatibility and accessories Compatible with 12V, 24V, and 220V power sources Package Contents: 1 amplifier board, 1 adapter Other information Light reflection and different displays may cause color variations in the item compared to pictures.