---
product_id: 28821852
title: "HiLetgo 5pcs PAM8403 2X 3W Mini Digital Power Amplifier Board AMP Class D 2.5-5V Input"
brand: "hiletgo"
price: "338053₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Hi Letgo"
url: https://www.desertcart.vn/products/28821852-hiletgo-5pcs-pam8403-2x-3w-mini-digital-power-amplifier-board
store_origin: VN
region: Vietnam
---

# 90% Class D efficiency 1.85 x 2.11 cm ultra-compact 3W + 3W stereo output power HiLetgo 5pcs PAM8403 2X 3W Mini Digital Power Amplifier Board AMP Class D 2.5-5V Input

**Brand:** hiletgo
**Price:** 338053₫
**Availability:** ✅ In Stock

## Summary

> 🔊 Tiny Amp, Big Impact: Elevate your sound game without the bulk!

## Quick Answers

- **What is this?** HiLetgo 5pcs PAM8403 2X 3W Mini Digital Power Amplifier Board AMP Class D 2.5-5V Input by hiletgo
- **How much does it cost?** 338053₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/28821852-hiletgo-5pcs-pam8403-2x-3w-mini-digital-power-amplifier-board)

## Best For

- hiletgo enthusiasts

## Why This Product

- Trusted hiletgo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built for Reliability:** Short-circuit and over-temperature protection keep your projects safe and sound.
- • **Plug & Play USB Power:** Runs directly off 5V USB power—no bulky adapters or heat sinks needed.
- • **Pocket-Sized Powerhouse:** Fits seamlessly into any compact digital project without sacrificing sound quality.
- • **Whisper-Quiet Performance:** Advanced noise suppression ensures zero hiss or pop, even when speakers are idle.
- • **Crystal-Clear Stereo Output:** Dual-channel 3W per channel drives 4Ω-8Ω speakers with impressive clarity and volume.

## Overview

The HiLetgo PAM8403 Mini Digital Power Amplifier Board delivers efficient Class D amplification in a super-compact 1.85 x 2.11 cm form factor. Powered by 2.5-5.5V USB input, it outputs clean 3W stereo sound to 4Ω-8Ω speakers with built-in noise cancellation and robust protection features, making it ideal for DIY audio projects, portable speakers, and compact digital devices.

## Description

Features: Can use the computer USB port 5V power supply or using a mobile phone charger USB port 5V power supply battery power can also be used high efficiency:90% can provide 3W (left channel) +3 W (right channel) output power in the 4 load and 5V power supply conditions A class, B class amplifier such efficiency is only about 30% D class amplifier is highly respected today D class amplifier efficiency is extremely high, not because of temperature affect the sound quality but do not add heat sink and take less space noise canceling circuit was built in the amplifier board power on / off without pop noise module has a short-circuit current protection and over-temperature protection Application: LCD TVs, monitors/Laptop/Portable Speakers/ Portable DVD players,/game consoles/ Phone / speakerphone Specifications: Operating voltage: 2.5V-5.5V Speaker With:4-8ohms recommended:4 ohms Speaker Power :2-8W Size:21 x 18 x 3.4mm(L x W x H) Color:As the pics show Net weight:1g Package Included: 5*Super Mini PAM8403 Digital Power Amplifier Board Note:Left and right channel output "negative" can not be connected together, otherwise it will burn IC, and should be connected before the horn (load). Rated working voltage 2.5 ~ 5V, the limit working voltage 5.5V

Review: Works well - It works perfectly well, and the output is really clean.
Review: Impressive tiny amp - Been an audio guy for many years so I was a bit skeptical of these coming from full rack size class AB stuff, but these are pretty impressive. They're not "hi-fi" by any means but they sound really good for what they are, and as others have mentioned they don't even get warm enough to bother slapping a little heat sink on. I wired up the first unit to run from a USB-A plug, with a standard 1/8" aux plug for input, and alligator leads for outputs. Connected it to a few different drivers and speakers for testing, threw some awkward passive crossovers at it, drove a 2 ohm load with it. Thing barely got warmer than room temp. There is a bit of noise on the output, quieted some with a small cap across the power input, would probably be better in a small shielded or metal project box, but again, it's really impressive for the price. The sound isn't as full or powerful as a "real" amp, but for something like a mini bluetooth boombox or a small project that needs to make noise, this would be ideal.

## Features

- Super mini volume: 1.85 x 2.11 cm.Can be easily placed in a variety of digital products within a small space, high efficiency amplification
- Dual-channel stereo, 5V power supply can output 3W +3 W power, can be directly driven 4Ω, 8Ω small speakers, the output power, enough energy, good sound quality.
- Excellent noise suppression, no audio input in the case of ear close to the speaker can not hear any noise.
- The unique Class D digital powerless board with LC filter can be powered directly from the computer's USB.
- Double-panel wiring, properly solve the wiring caused by the potential balance and crosstalk between channels

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LODGV64 |
| Best Sellers Rank | #9,747 in Electronics ( See Top 100 in Electronics ) #32 in Audio Component Amplifiers |
| Brand | HiLetgo |
| Customer Reviews | 4.5 4.5 out of 5 stars (539) |
| Date First Available | July 10, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.176 ounces |
| Item dimensions L x W x H | 0.82 x 0.7 x 0.13 inches |
| Item model number | 3-01-0114 |
| Manufacturer | HiLetgo |
| Material | Printed Circuit Board (PCB) materials, copper, and solder |
| Maximum Supply Voltage | 5.5 Volts (DC) |
| Minimum Supply Voltage | 2.5 Volts |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Output Power | 6 Watts |
| Package Type Name | individual small plastic bags or shrink wrap |
| Product Dimensions | 0.82 x 0.7 x 0.13 inches |
| UPC | 797698770550 |
| Voltage | 5 Volts |

## Product Details

- **Item dimensions L x W x H:** 0.82 x 0.7 x 0.13 inches
- **Manufacturer:** HiLetgo
- **Maximum Supply Voltage:** 5.5 Volts (DC)
- **Minimum Supply Voltage:** 2.5 Volts
- **Voltage:** 5 Volts

## Images

![HiLetgo 5pcs PAM8403 2X 3W Mini Digital Power Amplifier Board AMP Class D 2.5-5V Input - Image 1](https://m.media-amazon.com/images/I/71nnR8DiWhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well
*by S***F on January 5, 2026*

It works perfectly well, and the output is really clean.

### ⭐⭐⭐⭐⭐ Impressive tiny amp
*by A***M on August 30, 2025*

Been an audio guy for many years so I was a bit skeptical of these coming from full rack size class AB stuff, but these are pretty impressive. They're not "hi-fi" by any means but they sound really good for what they are, and as others have mentioned they don't even get warm enough to bother slapping a little heat sink on. I wired up the first unit to run from a USB-A plug, with a standard 1/8" aux plug for input, and alligator leads for outputs. Connected it to a few different drivers and speakers for testing, threw some awkward passive crossovers at it, drove a 2 ohm load with it. Thing barely got warmer than room temp. There is a bit of noise on the output, quieted some with a small cap across the power input, would probably be better in a small shielded or metal project box, but again, it's really impressive for the price. The sound isn't as full or powerful as a "real" amp, but for something like a mini bluetooth boombox or a small project that needs to make noise, this would be ideal.

### ⭐⭐⭐⭐⭐ Excellent value.
*by N***R on May 2, 2025*

I've been using this for 8 hours a day for the past month. I have it powering 2 - 16 ohm speakers (about 1.5W total between both channels). It hasn't had any issues at all. It doesn't even get warm to the touch at maximum volume for 8 hours straight. Definitely great value. I haven't tested the other 4 boards but they all appear to have the same build quality.

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- HiLetgo 5pcs PAM8403 2x 3W Mini Digital Power Amplifier Board AMP Class D 2.5-5V Input
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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-21*