2.1 Channel Output: Elevate your audio experience with the Bluetooth power amplifier board featuring a 2.1 channel stereo output. With an impressive output power of 50W, 50W, and 100W, this module delivers HiFi fever sound quality. Enjoy pure and transparent treble alongside a bass that is both surging and shockingly powerful, perfect for audiophiles seeking superior sound. Knob Adjustment: Experience seamless control with the classic-looking multifunction main knob. This high-end coding knob allows for 360-degree continuous tuning, providing a glossy hand feel. The design supports one-key start and stop, ensuring simple and convenient operation for all users. Multifunctional Control: Enhance your listening experience with the digital power amplifier module's support for mobile phone app control. Upgrade to the YS APP for advanced sound control, offering visual playback modes compatible with iOS and Android systems. Effortlessly change device names, set connection passwords, adjust volume, and manage playback with ease. Broad Compatibility: The sound power amplifier module is designed with multiple 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. Multiple Protections: Enjoy peace of mind with the built-in protection mechanisms of the power amplifier board. It includes electrostatic protection, overheating protection, overcurrent protection, and short circuit protection, ensuring safe and reliable operation in any environment.