Enhance your audio experience with our Bluetooth Amplifier Module, a 2-channel high-power digital AUX sound amp receiver board designed for precise bass and treble control. This versatile module is perfect for audiophiles seeking superior sound quality and flexibility. Use Of Power Supply: For optimal performance, we recommend using an 18V, 19V, or 24V power supply with a current of 5A or more. While you can use a 9V or 12V power supply with 1A or 2A, be aware that maximum volume may cause distortion, affecting sound quality. Application: The output power of the BT amplifier module increases with higher voltage and current. Use a 12V 1A power supply for 3 to 4-inch speakers. For larger 8 to 10-inch speakers, a 19V 5A or higher power supply is ideal, ensuring robust sound output. 2 Sound Input Modes: This amplifier module offers two sound input modes: Bluetooth (BT) and AUX. BT mode takes precedence, allowing seamless connectivity. Regardless of the mode, BT can always be connected, catering to your diverse audio needs. Mode Use: When successfully connected via Bluetooth, the module operates in BT mode, supporting automatic reconnection. If BT is not connected and AUX is inserted, the module switches to AUX mode. Ensure the BT connection is disconnected when using AUX mode. BASS Potentiometer: The BASS potentiometer, located in the middle of the amplifier receiver board, allows you to control bass levels. Rotate right to enhance bass and left to attenuate. In the middle position, bass remains neutral, neither enhanced nor attenuated. TREBLE Potentiometer: Located on the left side of the BT amplifier board, the TREBLE potentiometer lets you adjust treble levels. Rotate right for treble enhancement and left for attenuation. In the middle position, treble remains neutral, providing balanced sound. Upgrade your sound system with this Bluetooth Amplifier Module, designed for those who demand high-quality audio and precise control over their listening experience. Whether you're powering small or large speakers, this module delivers exceptional performance and versatility.