---
product_id: 62378448
title: "BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker"
brand: "fosi audio"
price: "A$192"
currency: AUD
in_stock: true
reviews_count: 9
category: "Fosi Audio"
url: https://www.desertcart.com.au/products/62378448-bt20a-bluetooth-stereo-amplifier-2-channel-home-audio-component-amplifiers
store_origin: AU
region: Australia
---

# Compact 5.2x3.54x1.42 in design Seamless Bluetooth streaming 200W max output power BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker

**Brand:** fosi audio
**Price:** A$192
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your soundscape—small amp, massive vibes!

## Quick Answers

- **What is this?** BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker by fosi audio
- **How much does it cost?** A$192 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/62378448-bt20a-bluetooth-stereo-amplifier-2-channel-home-audio-component-amplifiers)

## Best For

- fosi audio enthusiasts

## Why This Product

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

## Key Features

- • **Sleek Minimalism:** Ultra-compact metal chassis fits discreetly in any modern workspace or living area.
- • **Wireless Freedom:** Stream your favorite playlists effortlessly with stable, low-latency Bluetooth connectivity.
- • **Plug & Play Simplicity:** Easy installation with one-touch power and versatile RCA inputs for instant setup.
- • **Tailored Sound Control:** Fine-tune bass and treble with intuitive knobs for a personalized audio experience.
- • **Power that Packs a Punch:** Delivers a robust 100Wx2 stereo output to energize any room or outdoor setup.

## Overview

The Fosi Audio BT20A is a mini Class D stereo amplifier delivering 200W total power (100Wx2 channels) with Bluetooth and RCA inputs. Its compact metal design fits seamlessly in any environment, from home offices to patios. Featuring simple bass/treble controls and easy setup, it powers passive speakers with clean, powerful sound—perfect for millennials seeking stylish, flexible audio solutions that blend performance with convenience.

## Description

desertcart.com: Fosi Audio BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker : Electronics

Review: Plenty of power for its size. - The Fosi Audio BT20A Bluetooth Stereo Amplifier has been a great little amp for a compact setup. I’m using it in a small turntable system, driving a pair of 3.5-inch bookshelf speakers, and it’s been more than capable. Power is plenty for a smaller room, and it sounds clean and enjoyable without feeling strained. The bass and treble controls are simple but effective, giving just enough adjustment to dial in the sound without overcomplicating things. The Bluetooth feature is a nice bonus and works well for streaming music from my phone when I don’t feel like spinning records. One of the biggest advantages is the size. It’s small, simple and clean looking, lightweight, and easy to tuck away, which makes it perfect for minimal or space-limited setups. It doesn’t try to be fancy, but it does exactly what it should. For the price, this is a very solid value. If you need an affordable, compact amp for a small speaker setup, this is an easy recommendation.
Review: This is an excellent product - TL;DR: This works exactly as it should. Great piece of equipment is such a tiny form factor I've been meaning to setup a more permanent outdoor speaker solution to my backyard and was going to go with the old fashioned "run 200 feet of speaker cable" because the high receiver I bought was pretty far away and I was going to use Zone 2 for the speakers. But this little package came up on my searches and it was exactly what I wanted and more. There is an area in the backyard that we set up outdoor movies at and I use a portable speaker for sound. Instead it dawned on me that not only can i stream music from any source with this bluetooth connection to this device, I can also double up and use it for outdoor movies if I place them correctly. Well I found an outdoor telephone jack and indoor jack and I was able to run audio cable outside through those openings which were right next to where I would put the movie screen. So I was able to put two outdoor speakers in a place so that it can provide sound for movies AND they are in a general area that I can stream/play music for the backyard in general. No need to wire anything from the receiver and eliminates the need to bring out a boombox outdoor speaker for movies. What I was really happy about is how fast and solid the bluetooth connection is. I use an old laptop for streaming music and store all my ripped CDs. I thought I was going to have to hardwire the laptop to this Fosi amp because the laptop is like six years old. After a little work and trial and error, I finally figured it out and it works. The first time the laptop had a hard time finding it but now that it is in the list of known devices, it connects flawlessly. I tried iphones, tables, etc. and all of the newer devices find it with no problems. Even my echo show found it and its about 40 feet away in another room. Movies sound great, have my Lounge music running at night and I'm so happy about this setup. And, going back to my resistance to running cable, I only need 30 feet of outdoor cable for both speakers so it was convenience too. Highly recommend this product: very inexpensive, does exactly what it is supposed to and greatly enhances the flexibility of what you can do.

## Features

- ENTRY-LEVEL POWER AMPLIFIER: Experience powerful sound with the BT20A Bluetooth amplifier, boasting an impressive 100Wx2 maximum output power. It can power multiple speaker cabinets, which can be used at home or in small venues
- EFFECTIVE, SIMPLE, AND NO FRILLS: The compact design allows it to be used in any space where passive speakers are required. It can be used in an office, a bedroom, a living room, a garage, or even on the patio
- EASY TO SET UP: The 2 Channel amplifier has a straightforward installation and a one-touch power switch for easy operation. The smooth bass and treble controls allow tuning to taste and the connected bookshelf speakers
- BLUETOOTH AND RCA INPUTS: The seamless Bluetooth connectivity allowing you to stream music directly from your phone without any dropouts or delays, delivering crystal-clear sound and impressive volume for your home audio setup
- ALL-BLACK DESIGN: This Class D amplifier features an integrated one-piece design that not only adds to its looks but also makes it more durable. With its stylish look, it fits wonderful on any shelf and complements most home decor

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BQC7GNL |
| Best Sellers Rank | #3,796 in Electronics ( See Top 100 in Electronics ) #6 in Audio Component Amplifiers |
| Brand | Fosi Audio |
| Customer Reviews | 4.5 4.5 out of 5 stars (9,419) |
| Date First Available | March 26, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.5 pounds |
| Item dimensions L x W x H | 5.2 x 3.54 x 1.42 inches |
| Item model number | BT20A |
| Language | English |
| Manufacturer | Fosi Audio |
| Material | Metal |
| Maximum Supply Voltage | 24 Volts |
| Minimum Supply Voltage | 12 Volts (DC) |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Output Power | 200 Watts |
| Product Dimensions | 5.2 x 3.54 x 1.42 inches |
| Specification Met | Hi-fi |
| Voltage | 230 Volts |

## Product Details

- **Item dimensions L x W x H:** 5.2 x 3.54 x 1.42 inches
- **Manufacturer:** Fosi Audio
- **Maximum Supply Voltage:** 24 Volts
- **Minimum Supply Voltage:** 12 Volts (DC)
- **Voltage:** 230 Volts

## Images

![BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker - Image 1](https://m.media-amazon.com/images/I/61+cd+AMZcL.jpg)

## Questions & Answers

**Q: How do I switch between RCA and Bluetooth on the BT20A?**
A: Bluetooth takes priority over RCA. To switch to RCA, restart the device or disconnect Bluetooth.

**Q: What is the position for flat frequency response on the amplifier?**
A: The middle position (12 o’clock) provides a flat frequency response.

**Q: What type of DC plug do I need for the BT20A’s power supply?**
A: The DC barrel connector dimensions are 5.5*2.5mm.

**Q: What's the upgraded version of the BT20A amp, and what accessories come with it?**
A: -If you're seeking the upgraded version of the BT20A, please consider the BT20A Pro amp.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Plenty of power for its size.
*by T***Y on January 19, 2026*

The Fosi Audio BT20A Bluetooth Stereo Amplifier has been a great little amp for a compact setup. I’m using it in a small turntable system, driving a pair of 3.5-inch bookshelf speakers, and it’s been more than capable. Power is plenty for a smaller room, and it sounds clean and enjoyable without feeling strained. The bass and treble controls are simple but effective, giving just enough adjustment to dial in the sound without overcomplicating things. The Bluetooth feature is a nice bonus and works well for streaming music from my phone when I don’t feel like spinning records. One of the biggest advantages is the size. It’s small, simple and clean looking, lightweight, and easy to tuck away, which makes it perfect for minimal or space-limited setups. It doesn’t try to be fancy, but it does exactly what it should. For the price, this is a very solid value. If you need an affordable, compact amp for a small speaker setup, this is an easy recommendation.

### ⭐⭐⭐⭐⭐ This is an excellent product
*by R***E on August 7, 2022*

TL;DR: This works exactly as it should. Great piece of equipment is such a tiny form factor I've been meaning to setup a more permanent outdoor speaker solution to my backyard and was going to go with the old fashioned "run 200 feet of speaker cable" because the high receiver I bought was pretty far away and I was going to use Zone 2 for the speakers. But this little package came up on my searches and it was exactly what I wanted and more. There is an area in the backyard that we set up outdoor movies at and I use a portable speaker for sound. Instead it dawned on me that not only can i stream music from any source with this bluetooth connection to this device, I can also double up and use it for outdoor movies if I place them correctly. Well I found an outdoor telephone jack and indoor jack and I was able to run audio cable outside through those openings which were right next to where I would put the movie screen. So I was able to put two outdoor speakers in a place so that it can provide sound for movies AND they are in a general area that I can stream/play music for the backyard in general. No need to wire anything from the receiver and eliminates the need to bring out a boombox outdoor speaker for movies. What I was really happy about is how fast and solid the bluetooth connection is. I use an old laptop for streaming music and store all my ripped CDs. I thought I was going to have to hardwire the laptop to this Fosi amp because the laptop is like six years old. After a little work and trial and error, I finally figured it out and it works. The first time the laptop had a hard time finding it but now that it is in the list of known devices, it connects flawlessly. I tried iphones, tables, etc. and all of the newer devices find it with no problems. Even my echo show found it and its about 40 feet away in another room. Movies sound great, have my Lounge music running at night and I'm so happy about this setup. And, going back to my resistance to running cable, I only need 30 feet of outdoor cable for both speakers so it was convenience too. Highly recommend this product: very inexpensive, does exactly what it is supposed to and greatly enhances the flexibility of what you can do.

### ⭐⭐⭐⭐⭐ Solid little unit.
*by D***Z on April 28, 2025*

I got this to run some higher end home audio speakers installed outside for the yard/pool area at our house. The speakers are $300 each and I had been running it on an older Sony coil-based home theater amp because I thought I needed the zones and independent volume controls/management for tone/eq. The amp in the cabinet indoors was putting out quite a bit of heat when it was powered on whether they were in use or not. The wiring was a total mess and I bluntly didn't enjoy dealing with it. I went in to this project assuming I was going to get a Denon, Onkyo, Yamaha, or some home audio mixer board + eq, or something fancy with roughly $2k budget... I was on struggle street trying to piece it all together. I only need a simple input amp. I have a cheap class T amp in my garage that works for what I am doing there, but the audio quality is trash. I rolled the dice and picked up a few of these and man, they blew my mind. They have a lot of punch/power and the audio quality is REALLY surprising compared to the old stuff I had. The BT connection is ROCK SOLID. A lot of these cheap china BT interfaces are trash and buggy. This thing pairs right up and is solid and reliable. I'm waiting on the splitters to feed the source to all of them, but per zone, they're superb. Super straightforward install and good labeling, pair with FosiXXX and go for BT. It's a small, light package and the box it comes in is pretty good for it's weight and has some heft. Not sure whether the weight is from the case or components, but it's a mosfet so we'll see about heat dissipation down the road and whether it does a thermal cutoff or not. I might end up getting more for the garage after a few sessions in the backyard. I was pleasantly surprised!

## Frequently Bought Together

- Fosi Audio BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker
- Banana Plugs with Dual Set Screws,Black and Red Aluminum Shell,6 Pairs
- Amazon Basics Speaker Cable, Easy Assembly, 16-Gauge, Bronze, 100 ft

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-26*