# Audio amplifier module, PAM8403, 3.6-5V, 2x3W

> Digital audio amplifier module based on the PAM8403 chip, supply voltage 3.6-5VDC, delivering stereo power 2x3W (2 channels), output impedance 4 or 8 ohm. Frequency response 20Hz-20kHz, SNR above 90dB, THD below 0.1%, efficiency over 90%. Stereo audio input via pins (no jack socket), suitable for portable audio projects and DIY speakers. Dimensions 15.5 x 24mm.

- Page: https://sigmanortec.ro/en/audio-amplifier-module-pam8403-36-5v-2x3w
- Price: 5.28 RON
- Availability: In stock; 1-2 zile
- Reference: 9583 · EAN: 5941183755958
- Category: Mechatronics and IoT > Sensors and Modules > Audio and Sound > Audio Amplifiers
- Specifications: Type: Amplifier; tension: AD; Power: 0 - 20W; Supply Voltage: 3.6; Maximum Input Voltage: 5; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.004 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-21 11:09 (Europe/Bucharest)

## Description

Compact digital audio amplifier for portable projects and DIY speakers, 3.6-5V power supply, offers 2x3W stereo sound with over 90% efficiency and low noise, works with 4-8 ohm speakers, AUX input on pins for quick integration into electronic assemblies.
This digital amplifier module that uses the integrated PAM8403 is designed for use in portable audio applications, having a power of up to 3W per channel. This amplifier board is small and light, which makes it ideal for use in portable devices. The PAM8403 amplifier board can be powered from a power source between 3.6 and 5VDC.
This amplifier board is built around the PAM8403 integrated circuit, which provides an output power of up to 3W per channel (it has 2 channels), with an output impedance of 4 ohms.
The PAM8403 amplifier board has a stereo input, which allows connection to a wide range of audio devices, such as mobile phones, MP3 players or computers. The AUX connection to this board is made through dedicated pins (it does not have an audio jack).
Specifications:
Supply voltage: 3.6 - 5VDC
Integrated circuit: PAM8403
Output power: up to 3W per channel (2 channels)
Output impedance: 4 or 8 ohms
Frequency response: 20Hz - 20kHz
Signal-to-noise ratio (SNR): over 90dB
Total Harmonic Distortion (THD): less than 0.1%
Audio input: stereo, 3-wire
Efficiency: >90%
Dimensions mm: 15.5 x 24mm