Stereo amplifier 2x3W 2.5-5V with potentiometer PAM8403 20-20kHz Class D

Stereo amplifier 2x3W 2.5-5V with PAM8403 potentiometer 20-20kHz Class D

The 2x3W audio amplifier based on the PAM8403 IC is a compact and efficient solution for audio projects. The device is powered by 5V and delivers 2x3W output power, enabling clear sound from 20Hz to 20KHz. The module is an excellent choice for microcontroller-based projects-ideal for Arduino, ESP8266, ESP32, and Raspberry Pi.

Thanks to high efficiency of 90% and support for 4-8 Ohm impedance, the amplifier performs well in a wide range of audio applications. Class D ensures efficient energy use, and the built-in potentiometer allows precise volume control. Compact dimensions of 28 x 20 x 15 mm make the module easy to integrate into electronic systems.

Key technical specifications

• Supply voltage: 5V
• Output power: 2x3W
• Frequency response: 20Hz - 20KHz
• Impedance: 4-8 Ohm
• Efficiency: 90%
• Amplifier class: Class D
• Main IC: PAM8403
• Control: Potentiometer for volume adjustment
• Dimensions: 28 x 20 x 15 mm

Example applications

• Building portable speakers powered from a USB port
• Audio notification systems in IoT and Smart Home projects
• Adding sound to toys and remote-controlled models
• Creating miniature audio players and radio stations
• Expanding multimedia systems based on popular microcontrollers

Benefits

• High energy efficiency thanks to the Class D amplifier
• No need for additional cooling heatsinks
• Extremely small size for easy mounting in tight spaces
• Convenient volume control via the integrated potentiometer
• Seamless compatibility with 5V power modules and popular development platforms