---
product_id: 68014327
title: "Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers"
brand: "fosi audio"
price: "€ 196.48"
currency: EUR
in_stock: true
reviews_count: 13
category: "Fosi Audio"
url: https://www.desertcart.at/products/68014327-fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2
store_origin: AT
region: Austria
---

# Bluetooth 5.0 with 50ft range 100W x 2 powerful output Bass & treble customizable Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers

**Brand:** fosi audio
**Price:** € 196.48
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game—compact power that keeps you connected and in control!

## Quick Answers

- **What is this?** Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers by fosi audio
- **How much does it cost?** € 196.48 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/68014327-fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2)

## 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

- • **Built to Last:** All-metal chassis with a 24-month warranty means your audio investment is protected and stylish.
- • **Tailor Your Tone:** Precision bass and treble controls let you craft the perfect soundscape for any mood or space.
- • **Compact Yet Mighty:** Sleek, space-saving design fits effortlessly in your home, office, or outdoor setup without compromise.
- • **Room-Filling Power:** Unleash 200W total output for immersive sound that commands attention.
- • **Seamless Wireless Streaming:** Bluetooth 5.0 ensures stable, high-quality audio up to 50ft—ditch the cables, keep the vibe.

## Overview

The Fosi Audio BT20A is a compact Class D Bluetooth amplifier delivering 100W per channel with TI TPA3116D2 chips, featuring Bluetooth 5.0 for wireless streaming up to 50ft, customizable bass and treble controls, and a durable all-metal design backed by a 2-year warranty—perfect for professional-grade audio in any setting.

## Description

Enjoy room-filling sound with this compact Bluetooth amplifier featuring 100W x 2 output, bass and treble controls, and a sleek design for home, office, or outdoor use.

Review: Surprisingly great. I am really surprised - I brought the first amp a while ago and sent it back as I wasn’t happy with the sound quality or output. I think I said it may be ok for a small broom cupboard. Roll on 2 years or so and having re-read the reviews I decided I would give it another go With a fresh set of ears Maybe I had a bad one last time of they have tweaked the firmware or something, But it’s a very different amp from the one I recall - To my surprise this one was excellent- I would say unbeatable for the price. Ok so some complain that the Bluetooth is not protected so anyone can jump on it and that would be a nice extra but it is what it is. It’s driving a couple of external speakers with a well known home assistant input for the garden and I’m seriously impressed. Also tried some mission bookshelf speakers I had spare. Bass and treble are adjustable and work remarkably well. Bluetooth seems solid and clear; aux in is even better. Recommendation: set bass and treble to 50% (pointing straight up) as a starting point, this will give you a good reference point. I’m really fussy about sound and wasn’t expecting much but I’m really glad I gave this little beast a second go. I would absolutely recommend for small or mid size room.
Review: great little amp (BT20A) - I bought this Fosi amp (BT20A) 2 months ago having read mixed, but mainly good, reviews. I have it connected to a pair of Maudant Short MS20i speakers which were previously connected to a big Technics amp. I'm not an expert on sounds, but I like a good sounding stereo, and this amp with music from my phone (spotify) bluetoothed to it is great. It's plenty loud enough for an average living room and the clarity is excellent, and the adjustments for bass and treble are simple and effective. I think it's as good as the Technics amp (SA-EX320) soundwise, but much simpler with a lot less functions - but it does have bluetooth! I listen to music from my phone via bluetooth, and I have the optical out from my TV through a converter into the RCA inputs. Both sound great (to a non audiophile) with the only very slight issue being that occasionally when the TV is off and nothing is connected to the BT, if the volume is high some small clicky noises can be heard, but that may be the cheap optical to RCA converter I am using. The power supply is a bit of an eyesore compared to the sleek little amp itself, so I had to hide that (and a load of other wires) in a cable tidy box. The picture shows how tiny it is next to a Tivo box. I'm really glad I bought it and I would happily buy another if needed, but I am a bit miffed that in the 2 months since I bought it the price has dropped from £70 to £60! It is a bargain.

## Features

- 【Bluetooth 5.0】Featuring an integrated Bluetooth ATS2853 chip, this bluetooth amplifier supports streaming up to 50ft (15m). Effortlessly connect via Bluetooth to enjoy high-quality music from MP3, Phone, Pad, PC, or Laptop, embracing the wireless era.
- 【Compact Design】Our mini amplifier offers a sturdy, space-saving design for home, office, or outdoor use. Elevate your audio experience with bass and treble controls to tweak settings as needed.
- 【Immersive Audio Quality】Elevate your audio environment with room-filling sound, driven by a total output of 100W x 2 at 4 ohms. Covering a wide frequency range of 20Hz - 20kHz with less than 0.04% THD, achieve the perfect balance of volume and detail for an unparalleled home entertainment experience.
- 【Superior Sound】Utilizing 2 integrated Classic TI TPA3116D2 chips, this device provides crisp, clean sound with crystal-clear highs and smooth, pure bass. It enhances voice clarity and speaker performance while maintaining lower energy consumption.
- 【 Exquisite Craftsmanship】This power amplifier comes nicely packaged with a solid feel to the case and the controls and connectors. The all-metal body ensures durability, and you can enjoy the peace of mind provided by Fosi Audio's 24-month warranty.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BQC7GNL |
| Best Sellers Rank | 1,477 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1 in Hi-Fi Amplifiers |
| Box Contents | Bluetooth Antenna x1, 32V 5A Power Supply x1 |
| Brand Name | Fosi Audio |
| Country of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 8,763 Reviews |
| Item Weight | 567 Grams |
| Manufacturer | Fosi Audio |
| Manufacturer Part Number | BT20A |
| Model Number | BT20A |
| Number of Items | 1 |
| Product Warranty | 2 years |
| Unit Count | 1.0 count |

## Product Details

- **Item dimensions L x W x H:** 13.2 x 9 x 3.6 centimetres
- **Manufacturer:** Fosi Audio
- **Maximum supply voltage:** 24 Volts
- **Minimum supply voltage:** 12 Volts
- **Voltage:** 230 Volts

## Images

![Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers - Image 1](https://m.media-amazon.com/images/I/61+cd+AMZcL.jpg)
![Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers - Image 2](https://m.media-amazon.com/images/I/71OPBXwFnKL.jpg)
![Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers - Image 3](https://m.media-amazon.com/images/I/71ZEBQfaP+L.jpg)
![Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers - Image 4](https://m.media-amazon.com/images/I/71qYzSzMSJL.jpg)
![Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers - Image 5](https://m.media-amazon.com/images/I/71yoVO+BNVL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Can these be connected to skytronic 125.061 100w 4ohm ceiling speakers?**
A: not sure.i have them connected to jbl 100 w speakers. copes fine

**Q: Can I use it for 2 Technics speakers, 3way, 6ohm, 100w each?**
A: I've got it wired to my old Gale Gold Mark 2, rated 6-8 ohms 100w I think? Sounds great!

**Q: I want to use a 12v adapter. What size adapter pin/head is required? I have tried a few spares that I had, but none of them fit.**
A: OD: 5.5mm; ID: 2.5mm
BT20A comes with a 24V adapter, you can find one like its size.

**Q: Can a technics direct drive turntable work via the rca input or does the turntable need a preamp?**
A: The input sensitivity is stated as less than or equal to 280mV. If your turntable outputs I similar voltage (I guess in the range of 150 to 280mV) then I would say you probably don't need a preamp. However, if it's output is a lot less, you will need a preamp. Fosi have a range of turntable preamps to choose from. Look up the specs of your turntable to find it's output voltage range. Hope that helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Surprisingly great. I am really surprised
*by P***K on 4 June 2023*

I brought the first amp a while ago and sent it back as I wasn’t happy with the sound quality or output. I think I said it may be ok for a small broom cupboard. Roll on 2 years or so and having re-read the reviews I decided I would give it another go With a fresh set of ears Maybe I had a bad one last time of they have tweaked the firmware or something, But it’s a very different amp from the one I recall - To my surprise this one was excellent- I would say unbeatable for the price. Ok so some complain that the Bluetooth is not protected so anyone can jump on it and that would be a nice extra but it is what it is. It’s driving a couple of external speakers with a well known home assistant input for the garden and I’m seriously impressed. Also tried some mission bookshelf speakers I had spare. Bass and treble are adjustable and work remarkably well. Bluetooth seems solid and clear; aux in is even better. Recommendation: set bass and treble to 50% (pointing straight up) as a starting point, this will give you a good reference point. I’m really fussy about sound and wasn’t expecting much but I’m really glad I gave this little beast a second go. I would absolutely recommend for small or mid size room.

### ⭐⭐⭐⭐⭐ great little amp (BT20A)
*by M***R on 22 September 2020*

I bought this Fosi amp (BT20A) 2 months ago having read mixed, but mainly good, reviews. I have it connected to a pair of Maudant Short MS20i speakers which were previously connected to a big Technics amp. I'm not an expert on sounds, but I like a good sounding stereo, and this amp with music from my phone (spotify) bluetoothed to it is great. It's plenty loud enough for an average living room and the clarity is excellent, and the adjustments for bass and treble are simple and effective. I think it's as good as the Technics amp (SA-EX320) soundwise, but much simpler with a lot less functions - but it does have bluetooth! I listen to music from my phone via bluetooth, and I have the optical out from my TV through a converter into the RCA inputs. Both sound great (to a non audiophile) with the only very slight issue being that occasionally when the TV is off and nothing is connected to the BT, if the volume is high some small clicky noises can be heard, but that may be the cheap optical to RCA converter I am using. The power supply is a bit of an eyesore compared to the sleek little amp itself, so I had to hide that (and a load of other wires) in a cable tidy box. The picture shows how tiny it is next to a Tivo box. I'm really glad I bought it and I would happily buy another if needed, but I am a bit miffed that in the 2 months since I bought it the price has dropped from £70 to £60! It is a bargain.

### ⭐⭐⭐⭐ Great little unit with punchy audio and no background noise
*by G***H on 4 January 2024*

I used this unit to drive pair of floor-standing speakers which I use with my PC (I like decent sound quality). This unit delivers punchy bass with no background noise on either the aux input or via Bluetooth. I'd had background noise problems with the previous amplifier (a Tangent 50W per channel unit), probably due to a ground loop. The Fosi BT20A unit background noise is completely inaudible. The unit is also very small (about 1/10 the size of the amp it replaced) but with the same output power. This is probably due to the fact that it is a Class D amplifier which makes it very efficient. It is more than capable of filling the room with sound at concert hall levels. The only issue I've had is that occasionally the Bluetooth input will not reconnect after the PC has been asleep. This is easily solved by briefly cycling the BT20A power. In short, I'd happily buy another.

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.at/products/68014327-fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2](https://www.desertcart.at/products/68014327-fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2)

---

*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-09-24*