> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 3W Mini Audio Stereo Amplifier (W2.54)

**Type:** Product page · **SKU:** DFR0119-O · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/3w-mini-audio-stereo-amplifier-w2-54.html ([markdown](https://core-electronics.com.au/3w-mini-audio-stereo-amplifier-w2-54.html.md))

This is a Mini Audio Stereo Amplifier from DFRobot. It has left and right channels that can realize stereo surround sound. The module has a mini body and 2.54mm...

## Pricing

- **Price:** $9.90 (inc GST) — $9.00 AUD, exc GST
- **Quantity discounts:** 6+ $8.55 (exc GST) · 12+ $8.19 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 1 today, and up to 160 more in 8–12 days.

## How to buy

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- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This is a Mini Audio Stereo Amplifier from DFRobot. It has left and right channels that can realize stereo surround sound. The module has a mini body and 2.54mm pin pitch, convenient to be embedded into any device. Using a [Stereo Enclosed Speaker (FIT0502)](https://core-electronics.com.au/stereo-enclosed-speaker-3w-8.html), you can directly control the audio amplifier without programming.

The mini audio stereo amplifier has two modes: sleeping and working modes. When pin “SW” is Low (0V), the amplifier’s bias circuit will be closed, then the module goes into sleep mode, while when pin “SW” is High (5V), the working mode enables. The audio stereo amplifier is in working mode by default (the pin is unconnected).

This Mini Audio Stereo Amplifier can be used in robot voice systems, DIY music boxes, sound modification.

**Note:**

1. The positive and negative poles are not allowed to be connected reversely.
2. The negative poles for the high and low channels are independent, do not connect them together.
3. The power supply should be no more than 5.5V, too high voltage will damage the IC.

**Diagrams:**

![](https://dfimg.dfrobot.com/enshop/image/data/DFR0119-O/Dimension-Diagram_0x0.png.webp)

![](https://dfimg.dfrobot.com/enshop/image/data/DFR0119-O/DFR0119-O-Connect-Diagram_0x0.png.webp)

**Specification**

- Power Input: DC 3.3-5.5V
- Power: 3W(4Ω,5V)
- Class D amplifier
- Support left and right channels
- Efficiency: >90%
- Dimension:18x20mm/0.71 x0.79”
- Pin Pitch: 2.54mm

**Documents**

- [Product wiki](https://wiki.dfrobot.com/3W_mini_audio_stereo_amplifier__SKU_DFR0119_)
- [PAM8403 Datasheet](https://core-electronics.com.au/attachments/localcontent/pam8403_19970003361.pdf)

**Parts List**

- 3W mini audio stereo amplifier x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0119-o.jpg)