This miniature PAM8403 module is a 3W Class-D stereo audio amplifier that delivers surprisingly clear and powerful sound for its size. With low THD+N (total harmonic distortion plus noise), it ensures high-quality audio reproduction, perfect for enhancing small DIY speaker projects. It comes with a built-in volume control knob and power switch, making it convenient and easy to use. The module operates on a standard 5V supply, whether from a USB source or battery pack, making it ideal for portable and battery-powered applications.

Whether you're building a compact speaker, upgrading an existing audio setup, or adding sound output to a mobile device, this module is a reliable and space-saving solution. Its efficiency and simplicity make it a great choice for beginners and hobbyists looking for clean audio in a small form factor. Add this to your project and enjoy crisp stereo sound wherever you go.

Features:

• Multiple power source options (USB, power bank, battery)
• Class D design (efficient and low-cost)
• Noise-canceling circuitry
• No popping sound on power up/down
• Built-in protections (short-circuit, undervoltage, thermal)
• Volume knob doubles as a power switch

Specifications:

• Operating Voltage: 2.5V-5.5V
• Output Power:  3W + 3W into 4Ω
• Speaker Load: 4-8 Ohms
• Efficiency: Up to 90%
• Size (w/o knob): 29 x 20 x 12.5 mm
• Size (w/ knob): 29 x 35 x 12.5 mm