# Miniature amplifier module, PAM8403, 2.2-5V

> Compact stereo amplifier module based on the PAM8403 chip. Delivers 2 x 3W into 4 Ohm speakers with efficiency up to 90%. Operates at 2.2-5 VDC and can be powered from Li-Ion batteries or USB. Small dimensions of 21 x 18 mm make it suitable for DIY projects and portable devices where space is limited.

- Page: https://sigmanortec.ro/en/miniature-amplifier-module-pam8403-22-5v
- Price: 3.58 RON
- Availability: In stock; 1-2 zile
- Reference: 9685 · EAN: 5941289792963
- Category: Mechatronics and IoT > Sensors and Modules > Audio and Sound > Audio Amplifiers
- Specifications: Type: Amplifier; tension: AD; Power: 0 - 20W; Supply Voltage: 2.2; Maximum Input Voltage: 5
- Package (shipping data): 0.002 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:33 (Europe/Bucharest)

## Description

Compact stereo amplifier module for DIY audio projects and portable devices, offers 2 x 3W into 4 Ohm with clear sound and efficiency up to 90%. It operates at 2.2-5V, is easily powered by Li-Ion batteries or USB, has low consumption and small dimensions 21 x 18 mm, ideal when space is limited.
The PAM8403 amplifier module is a compact and efficient solution for your audio amplification needs. Based on the PAM8403 chip, this module offers quality sound performance in a small package, being ideal for DIY projects, portable gadgets and applications where space is a concern.
With a flexible operating voltage from 2.2V to 5V, it adapts to a variety of power sources, being able to be powered directly from lithium batteries, while offering high efficiency and low energy consumption.
Specifications:
Supply voltage: 2.2 - 5VDC
Chipset: PAM8403
Channels: 2 (stereo)
Output power: 2 x 3W
Speaker impedance: 4 Ohm
Compatible speakers: 4 Ohms
Efficiency: 90%
Dimensions mm: 21 x 18mm
Login example: