Superior Sound Quality: Experience unparalleled audio performance with our Bluetooth amplifier board, featuring a 2.1 channel stereo output. With output power options of 50W, 500W, and 100W, this amplifier delivers audiophile-grade sound quality. Enjoy pure and transparent treble alongside a bass that is both surging and shockingly powerful, perfect for creating an immersive listening experience. Knob Adjustment: The amplifier board boasts a classic design with a multifunctional main knob that supports one-key start and stop for effortless operation. The high-end coding knob allows for 360-degree continuous tuning, providing precise control over your audio settings with a smooth, tactile feel. APP Control: Take full control of your audio experience with the digital amplifier board's support for mobile app control. The newly upgraded app offers advanced sound control and visual playback modes, compatible with both iOS and Android systems. Enjoy seamless Bluetooth connectivity for easy integration with your devices. Wide Compatibility: Designed for versatility, the amplifier board features a variety of input and output modes, ensuring compatibility with almost all home devices. Whether you're connecting a smartphone, MP3 player, PC, TV, tablet, or laptop, this amplifier integrates seamlessly into your existing setup, enhancing your audio experience across all platforms. Safety Protection: Enjoy peace of mind with the amplifier board's comprehensive safety features, including static protection, overheating protection, overcurrent protection, and short circuit protection. Additionally, the board supports name modification, connection password settings, volume control, and playback pause, ensuring a secure and customizable user experience.