USB Power Supply Module: The PAM8403 module is designed to be powered from a 5V USB power supply, providing a reliable and accessible power source for your DIY projects. Sound Reproduction: This digital module delivers low THDN and fidelity sound for a clear and enjoyable audio experience. Convenient Volume Control: There is a builtin volume control potentiometer for easy adjustment according to preferences, enabling a listening experience. Compact and Delicate Design: The circuit is optimized for performance, featuring a 6 mm fiberglass board and an upgraded power filter of 470uF. Its compact design supports reliable and efficient operation. LongLasting Performance: The potentiometer used in this module has a lifespan of up to 15 years, ensuring longterm reliability for your DIY kit. Specifications: