Directions for use: 1. Connect speakers: Connect the two wire ends of the speaker to the amplifier board's audio output port. For the left channel, connect the positive wire to the LOUT port and the negative wire to GND. For the right channel, connect the positive wire to the ROUT port and the negative wire to GND. 2. Connect audio source: Use a 2-core audio cable connected to the 3-pin audio input on the amplifier board. Connect the other end of the audio cable to an audio source such as a computer, mobile phone, MP3 player, or DVD player. 3. Connect the power supply: Use a DC power adapter, battery, or charger with an output between 1.8V and 12V. Connect the two DC power wires to the 2-pin power terminal on the amplifier board: the positive wire to VCC and the negative wire to GND. Ensure correct polarity to avoid damaging the amplifier board. 4. Power on: Once the power supply is connected, the amplifier board will enter working mode. Adjust the volume using the volume knob to suit your preference and enjoy the audio performance. This board features: - Uses the TDA2822M power amplifier chip, known for low static current and excellent crossover distortion characteristics. Suitable for portable and miniature audio devices such as tape recorders and computer speakers. - Includes a volume control potentiometer for easy adjustment, featuring a high-quality knob. - All audio connections use screw terminals, eliminating the need for a soldering iron. Wiring can be completed easily with a small screwdriver. - Circuit board is equipped with screw terminals for quick and secure connections. Even users without prior experience can wire the board easily by following the wiring diagram. Performance parameters: - Output power: 1 W x 2 (rated, for 1-3 inch speakers) - Maximum power: 1.5 W x 2 (compatible with 0.2-5 W speakers) - Speaker impedance: 4-32 ohms - Signal-to-noise ratio: 50 dB - Net weight: 25 g - Total harmonic distortion: 0.1% - Input interface: 3-pin screw terminal - Control type: Volume adjustment - Input voltage: DC 1.8-12V - Dimensions: 42 mm (length, excluding potentiometer) x 30 mm (width) x 25 mm (height) - Color: Blue - Material: Metal + PCB Package Contents: 1 x Volume Control Potentiometer Module Note: The package includes only the items listed above. Other accessories shown are not included. Note: Lighting and display differences may cause slight variations in the color of the item as seen on screen. Measurement error is allowed within +/- 1-3 cm.