Mini Digital Bluetooth Amplifier-50W*2

This awesome mini Bluetooth amplifier lets you connect your mobile phone, Raspberry Pi, and other Bluetooth-enabled main-boards to create your own unique speaker. It offers standard audio quality and a cost-effective solution with 50W output power. It features a volume adjustable knob, Bluetooth 5.0 input, and dual-channel output. It can be powered by DC 5 - 24V and is compatible with 4 - 8Ω, 30W - 200W passive speakers. The amplifier comes with bottom/top protective covers and has overheat and short-circuit protection. Operation is a breeze. Just connect the board to a speaker, power it on, rotate the volume knob, and the indicator LED will light up. Turn on the Bluetooth on your phone or Raspberry Pi, search for “BT - WUZHI”, and click to connect. You'll hear a ding - dong tone when connected successfully, and then you can play music. The Bluetooth will connect automatically next time the module is powered on. Note that the board will output enough power only when the audio input and power source voltage/current are sufficient. Higher power supply voltage means larger output power, and speaker impedance also affects the amplifier board's power output. With enough voltage and current, a larger speaker impedance in ohms results in smaller output power. Specification: Power Supply: 5 - 24V; Input: Bluetooth 5.0; Audio Quality: standard; Output Power: 50W*2; Compatible Speakers: 30W - 200W, 4Ω - 8Ω; Channel: left/right (stereo); Bluetooth Transmission Distance: 15m (Without any obstacle); Protection: overheat, short - circuit. Shipping List: Mini Digital Bluetooth Amplifier - 50W*2 x1, Acrylic Protective Case x2, Screwdriver x1, 20cm Power Wire x1, Knob x1, Accessories Package x1, Heat Sink x1.

Using this mini Bluetooth amplifier is easy. First, connect the amplifier board to a speaker and then power it on. Rotate the volume knob, and you'll see the indicator LED light up. Turn on the Bluetooth on your phone or Raspberry Pi. Search for “BT - WUZHI” and click to connect. When you hear a ding - dong tone, it means the connection is successful, and you can start playing music. Next time you power on the module, it'll connect to Bluetooth automatically. Here are some things to keep in mind. The amplifier needs sufficient audio input and power source voltage/current to output enough power. The higher the power supply voltage, the more power it'll output. Also, the speaker's impedance matters. With enough voltage and current, a speaker with a larger impedance in ohms will result in less output power. For maintenance, make sure to keep the amplifier in a dry and cool place. Check the protective covers regularly to ensure they're in good condition. If you notice any overheating or strange noises, turn off the power immediately and check for any issues.