Key features and benefits Dual channel amplifier with strong output: up to 160 W per channel into 48 ohm loads, delivering clear stereo sound for powered speakers or DIY audio builds. Flexible power and easy control: operates from DC 1224 V with an onboard volume adjustment potentiometer for convenient, handson volume management. Bluetooth 5.0 with reliable range: effective transmission up to about 20 meters in open space, allowing stable wireless playback from a smartphone or other Bluetooth device without noticeable dropouts. Multiple input options: Bluetooth wireless streaming, USB disk playback, and AUX audio input with FM function provide versatile source compatibility for different setups. fidelity and broad format support: uses an original amplifier chip for fidelity stereo sound and can decode mainstream formats including APE, FLAC, MP3, WAV, WMA, and others. Ready for common music playback formats: Bluetooth 5.0 speed transmission and wide format support ensure smooth playback from music collections. What it is and how it helps A compact, versatile Bluetooth amplifier board designed to drive 48 ohm speakers with a clean, powerful signal. Its multiple inputs and wide format support make it suitable for upgrading existing systems or building ones. Stable wireless playback from phones and other Bluetooth devices, with good range, so you can enjoy music without being tethered to the speaker. Easy to install in DIY audio projects such as powered speakers, sound bars, or compact hifi setups that run on 1224 V DC. Use scenarios Home hifi upgrade: integrate this board into a powered speaker or small audio cabinet to enable Bluetooth streaming, USB song playback, and AUX input for wired devices, while delivering quality stereo sound. DIY speaker or sound bar project: use the 48 ohm compatible dualchannel output to drive external speakers, providing a straightforward path to a featurerich Bluetoothenabled audio system. Vehicle or portable DCpowered audio: powered from 1224 V, suitable for car, boat, or other DC environments where a compact, fidelity amplifier with Bluetooth and multiple inputs is desirable.