USB Power Supply Module Powered by a 5V USB power supply, this PAM8403 module provides an accessible and hassle power solution. It can be powered from USB chargers, power banks, or other USB sources, reducing the need for separate power adapters. Sound Reproduction Low THDN enables clear and accurate sound reproduction from a compact module. Enjoy audio with clear output and a satisfying listening experience. Convenient Volume Control A userfriendly volume control potentiometer lets you adjust the audio level to your preference and environment, making it easy to find the right listening volume. Compact and Delicate Design Optimized circuit design features a 6mm fiberglass board and an upgraded power filter of 470uf. This compact and refined design saves space while enhancing reliability and durability. Use scenarios Build USBpowered desktop or compact speaker systems that run directly from a USB power source. Create portable audio devices or DIY Bluetooth speakers powered by a power bank or USB charger. Integrate into educational kits or micro projects that require clear amplification and adjustable volume.