PAM8403 USB Power Supply Module USB power solution This PAM8403 module can be powered directly from a 5V USB power supply. No separate power source or wall adapter is required, making it an accessible and hassle power option for compact audio projects. Clear and reliable sound Low THD plus N provides crisp and faithful audio reproduction. Enjoy clear sound quality that supports a satisfying listening experience in small form factor applications. Easy volume adjustment A user friendly volume control potentiometer lets you set the output level to match your preferences and specific listening needs with simple, precise adjustment. Compact and durable design The circuit is optimized for performance on a 6 mm fiberglass board, featuring an upgraded 470 uF power filter. This compact design saves space while enhancing reliability and long term durability. Common use scenarios Build a compact USB powered speaker or mini amp for a PC, laptop, or portable device Integrate into a Raspberry Pi or other microcontroller based audio project for amplified output Create a small portable audio device such as a DIY radio or Bluetooth speaker using USB power for convenience