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Fosi Audio BT20A Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver Mini Hi-Fi Class D Integrated Amp 2.0 CH for Home Speakers 100W x 2 with Bass and Treble Control TPA3116 (with Power Supply)
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Item Dimensions LxWxH | 5.2 x 3.54 x 1.42 inches |
Voltage | 220 Volts |
Manufacturer | Fosi Audio |
Brand | Fosi Audio |
Number of Channels | 2 |
About this item
- 2 Channel Amplifier: The BT20A Mini Bluetooth amplifier home audio offers both Bluetooth and RCA inputs, along with passive speaker outputs. This versatile amplifier enables you to build a high-quality 2.0-channel audio system, allowing seamless connections to your phone, computer, tablet, and more.
- Bass and Treble Control: The Fosi Audio BT20A stereo amplifier is tailor-made for audiophiles seeking exceptional HiFi sound quality. You have control over the sound of your bookshelf speakers through music or video software, fine-tuning the bass and treble to your preferences.
- Bluetooth 5.0 Amplifier: Featuring two Texas Instruments TPA3116D2 chips, the BT20A delivers powerful and clear stereo sound. The TPA3116D2 is a highly efficient digital amplifier with an advanced oscillator/PLL circuit, ensuring minimal interference and offering a robust connection range of up to 50 feet.
- The Ideal Partner Amplifier For Speakers: With an impressive 100W RMS per channel at 4 ohms, 20 Hz - 20 kHz, and only 0.04% THD, the BT20A Bluetooth amp is a powerhouse. It comes with a 24V power supply and can drive speakers with a capacity of 280 watts at 8 ohms or 320 watts at 4 ohms. (for passive speakers only, not the powered speakers)
- What You'll Get: BT20A stereo audio amplifier receiver x1, 24V/4.5A power supply x1, User Manual x1, a 24-month worry-free warranty and responsive customer service.
- Fosi Audio BT20A Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver and P1 Tube Pre-AmplifierThis bundle contains 2 items
- Fosi Audio BT20A Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver and Banana Plugs 2 Pairs / 4 pcsThis bundle contains 2 items
- Fosi Audio BT20A Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver and Box X1 MM Phono PreamplifierThis bundle contains 2 items
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Important information
Safety Information
Please plug the power cord into the amp THEN the wall.
From the brand
Amplifying Your Voice, Shaping Our Innovation
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Discover Fosi Audio - Your HiFi Solution! We're a tech-driven brand, crafting innovative audio products around the world. Our vision: Affordable excellence for each consumer. Our mission: Redefining HiFi with cost-effective innovations. Join Fosi Audio on this unique audio journey!
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Fosi Audio V3
TPA3255 Class D Home Audio Mini Speaker 2 Channel Amp 300 Watts x2
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Compare with similar items
This Item Fosi Audio BT20A Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver Mini Hi-Fi Class D Integrated Amp 2.0 CH for Home Speakers 100W x 2 with Bass and Treble Control TPA3116 (with Power Supply) | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart Add to Cart | Try again! Added to Cart Add to Cart | Try again! Added to Cart Add to Cart | Try again! Added to Cart Add to Cart | Try again! Added to Cart Add to Cart | Try again! Added to Cart Add to Cart | |
Price | $79.99$79.99 | $58.99$58.99 | $79.99$79.99 | $99.99$99.99 | $79.99$79.99 | $9.99$9.99 |
Delivery | Get it as soon as Monday, Apr 1 | Get it as soon as Monday, Apr 1 | Get it as soon as Monday, Apr 1 | Get it as soon as Monday, Apr 1 | Get it as soon as Monday, Apr 1 | Get it as soon as Tuesday, Apr 2 |
Customer Ratings | ||||||
Value for money | 4.6 | — | 4.1 | 4.4 | 4.7 | 5.0 |
Sound quality | 4.5 | — | 4.3 | 4.5 | 4.5 | 4.7 |
Volume control | 4.6 | — | 4.3 | 4.6 | 4.6 | — |
Sold By | Fosi Audio | HIFI College | Hifi Made Fun | Yima Top | Yima Top | Fosi Audio |
number of channels | 2 | 2 | 2 | 2 | 2 | — |
voltage | 220 volts | 24 volts | 110 volts | 230 volts | 230 volts | 3 volts |
mounting type | — | Surface Mount | — | — | Speaker | Tabletop |
Product guides and documents
What's in the box
Product Description
Stream Hi-Fi Music to Your Stereo System
Bluetooth 5.0 Mini Power Amplifier
Fosi Audio was founded with a simple goal: Build products that sound great and make people want to listen to music every day. We design, manufacture, and sell many Hi-Fi audio products on the market. We pursue your perfect music journey. Enjoy Hi-Fi music with Fosi Audio products.
2.0 Channel Bluetooth 5.0 Stereo Power Amplifier
- Power Adapter: 24V/4.5A, DC Input Range: 12-24V
- MAX Power Output: 100W x 2, Terminating Impedance: 2 Ohm - 8 Ohm
- THD ≤ 0.04%, SNR ≥ 98dB, Input Sensitivity ≤ 280mV
- Frequency Range: 20Hz - 20kHz (±1 dB), Input Mode: Bluetooth and RCA
- Bluetooth Transmission Distance: Up to 50 Ft
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up to 50ft connection
Bluetooth Receiver Amplifier
Instant setup with phones, tablets, and almost any other Bluetooth-enabled device.
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easy to fit your system
with Bass and Treble Control
Exclusively designed for the customers who pursue HiFi sound.
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MAX power output 100W*2
Simple Compact Design but Practical and Powerful
100 watt per channel power output can drive most home passive speakers to create astonishing Sound.
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for bookshelf speakers
2.0 Channel Wireless Stereo Amplifier
Easy to fit your audio system with Bluetooth and RCA input.
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made for audiophile
Extraordinary Clarity Hi-Fi Sound
Even at high volumes, there’s less than 0.04% harmonic distortion resulting in remarkable clarity.
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TI TPA3116D2 Chip
Advanced Circuitry Architecture
The Texas Instruments TPA3116D2 Chip presents music with rousing highs and deep lows.
Safe DC Outlet
With a built-in power protection circuit, there are no sparks flying when you plug the power adapter into the amplifier. Safe for use!
24V/4.5A Power Supply
Fosi Audio BT20A equip with an energy-efficient and stable power supply can get an astonishing sound.
Comparison
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Customer Reviews
|
4.5 out of 5 stars
7,994
|
4.4 out of 5 stars
572
|
4.5 out of 5 stars
506
|
4.5 out of 5 stars
2,443
|
4.6 out of 5 stars
781
|
4.5 out of 5 stars
835
|
4.4 out of 5 stars
79
|
Type
| Bluetooth 2.0 CH Amp | Bluetooth 2.1 CH Amp | 2.0 CH Amp | Bluetooth 2.1 CH Amp | Bluetooth 2.1 CH Amp | 2.0 CH Amp | 2.0 CH Mono Amp |
MAX Power Output
| 100W x 2 | 100W x 2 | 300W x 2 | 50W x 2+100W | 160W x 2 | 300W x 2 | 190W x2/ 300W x1 |
Input
| Bluetooth + RCA | Bluetooth + 3.5mm AUX + U-disk | RCA | Bluetooth + RCA | Bluetooth + RCA + U-disk | RCA | RCA+XLR+¼”TRS |
Output
| Passive Speakers | Passive/Active Speaker+Sub/Amp | Passive Speakers+Pre-Out | Passive Speaker/Sub+Active Sub | Passive Speakers + Active Sub | Passive Speakers | Passive SPK +Sub-out |
Treble & Bass Control
| ✔ | ✔ | ✘ | ✔ | ✔ | ✔ | ✘ |
THD
| ≤ 0.04% | ≤ 0.001% | <0.003% | ≤ 0.04% | ≤ 0.05% | ≤ 0.3% | <0.006% |
SNR
| ≥ 98dB | ≥ 92dB | ≥110dB | ≥ 98dB | ≥ 98dB | ≥ 90dB | ≥106dB |
Terminating Impedance
| 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm |
Power Adapter
| 24V/4.5A | 24V/4.5A | 32V/5A | 24V/4.5A | 24V/4.5A | 32V/5A | 48V/5A |
Work Voltage
| AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V |
Looking for specific info?
Product information
Item Dimensions LxWxH | 5.2 x 3.54 x 1.42 inches |
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Voltage | 220 Volts |
Manufacturer | Fosi Audio |
Brand | Fosi Audio |
Number of Channels | 2 |
Output Power | 200 Watts |
Product Dimensions | 5.2 x 3.54 x 1.42 inches |
Item Weight | 1.5 pounds |
ASIN | B07BQC7GNL |
Item model number | BT20A |
Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #1,760 in Electronics (See Top 100 in Electronics) #2 in Audio Component Amplifiers |
Is Discontinued By Manufacturer | No |
Date First Available | March 26, 2018 |
Language | English |
Country of Origin | China |
Warranty & Support
Feedback
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the Bluetooth connectivity, size, power, quality and performance of the electronic component amplifier. For example, they mention that it takes up so little space, it sounds great and that it puts out enough power to push the speakers to the point of being loud. That said, some complain about the Bluetooth connection and say it's dependable.
AI-generated from the text of customer reviews
Customers like the sound quality of the electronic component amplifier. They mention that it has great sound, good volume, and nice controls. Some appreciate the BT20A's total silence when it's not linked to the Echo. They also say that it gets loud and is a great device for playing music in a small house or living room.
"...I hooked this up to a pair of Definitive Pro Monitor 1000's and they sound amazing...." Read more
"...with high power output to deliver crystal clear, rich, and detailed sound to your speakers...." Read more
"...setup is flexible, doesn't require a remote control, and sounds terrific for the setting...." Read more
"...one thing i really like is the bluetooth addition. the sound quality is good and there is very little spurious noise...." Read more
Customers like the performance of the electronic component amplifier. For example, they say it works well with a good quality transmitter, it's quite good overall, and the output is fantastic. That said, some say it'd do a great job in a dorm room, desktop near field, and like. Overall, customers are satisfied with the build quality and overall performance of this small amplifier.
"...But what truly sets the Fosi Audio BT20A apart is not just its superb performance and compact design; it's the company's exceptional commitment to..." Read more
"...This would do a great job in a dorm room, desktop near field, and the like...." Read more
"TL;DR: This works exactly as it should. Great piece of equipment is such a tiny form factor..." Read more
"...Now I can use nice passive speakers with my computer. Works like a champ." Read more
Customers like the bluetooth connectivity of the electronic component amplifier. They say the connection is a snap, dependable, and fast. Some mention that the Bluetooth function is easy to use and there are no issues pairing or reconnecting with their iPhone or turntable.
"...This amp is everything I needed and nothing more. The Bluetooth option is cool and was very easy to connect to, but I'm primarily wired to my..." Read more
"...If you're seeking a small, powerful, and reliable Bluetooth amplifier, I wholeheartedly recommend the Fosi Audio BT20A. It may be small in size, but..." Read more
"...one thing i really like is the bluetooth addition. the sound quality is good and there is very little spurious noise...." Read more
"...The amp's bluetooth capabilities aren't great - the signal cuts in/out even when it's close to the source (my iMac or laptop) - but my turntable has..." Read more
Customers are satisfied with the power of the amplifier. They mention that it gets loud, sounds clean, and puts out decent power. Some say that the amp is awesome and that it's small, but packs a punch. Overall, most are happy with the performance and value of the product.
"...For a simple setup like this, this amp is perfect." Read more
"...If you're seeking a small, powerful, and reliable Bluetooth amplifier, I wholeheartedly recommend the Fosi Audio BT20A. It may be small in size, but..." Read more
"...This would offer multiple inputs with the ability to power any speakers and, for study time, headphones. Where was this stuff years ago?" Read more
"I am driving 1989 Bose Acoustamass speaks. They are high impedance so sound quality is fantastic but limited high volume...." Read more
Customers like the quality of the electronic component amplifier. They say it has a great build quality, solid and tight bass, smooth highs that can sparkle a little, and is reliable. Customers also say it's a small, reliable, and cost-effective solution for wireless or PC stereo. They also say the amplifier is an excellent component for their home office and more than adequate for their needs.
"...The Bluetooth connection is smooth and reliable, extending a generous range that grants you the freedom to roam while maintaining control over your..." Read more
"...i wish it were closer to a $60 price point but build quality seems good and sound quality overall is great for this little guy...." Read more
"...The damping factor (ability to control bass) is solid. Very tight bass from the 6” Niles...." Read more
"...The amp's bluetooth capabilities aren't great - the signal cuts in/out even when it's close to the source (my iMac or laptop) - but my turntable has..." Read more
Customers find the instructions for the electronic component amplifier to be super easy. They say it takes only 10 minutes to set up, pair, and connect via Bluetooth. Customers also mention that the small metal box is simple and nice.
"...The Bluetooth option is cool and was very easy to connect to, but I'm primarily wired to my computer...." Read more
"...The Fosi is definitely a very simple unit with no frills however it delivers far better than my expected at this price point...." Read more
"Safice to say.. sound quality, volume, ease of set up and price exceded my expectations for such small powerful unit...." Read more
"Easy to set up. Connects to Bluetooth and can play from phone, tv or IPad. Great sound!" Read more
Customers are satisfied with the size of the electronic component amplifier. They mention that it has plenty of power, a compact design, and is great space saver. Some say that the amp fits in the palm of their hand and that it nicely sits on a small shelf. Overall, customers are happy with the quality and size of this product.
"...the Fosi Audio BT20A apart is not just its superb performance and compact design; it's the company's exceptional commitment to customer satisfaction...." Read more
"...It's super compact but solidly built. If you don't need the amp for bluetooth, I don't think you can go wrong with this little guy." Read more
"...Small size was great, easy to hide, and it seems to have plenty of power...." Read more
"...This little amp has all that and takes up very little space and powers the speakers with ease...." Read more
Customers like the value of the electronic component amplifier. They mention that it's an incredible value for the money, affordable, and well worth it. Customers also say that it works well and sounds good, making it a solid low cost setup that takes very little space.
"...Highly recommend this product: very inexpensive, does exactly what it is supposed to and greatly enhances the flexibility of what you can do." Read more
"...It’s a great amp for the money and if you have a small set up. Would definitely recommend" Read more
"...buying the BT20A. All in all, the Fosi BT20A is a winner -- and a great value. Highly recommended!" Read more
"...Pretty good for the money, but not acceptable if you’re a true audiophile." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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Reviewed in the United States on January 15, 2024
The first thing you'll notice about the BT20A is its design. Don't be fooled by its diminutive size; this amplifier does not compromise on quality or performance. The unit packs a serious punch for a device of its stature. It's engineered with high power output to deliver crystal clear, rich, and detailed sound to your speakers.
The BT20A boasts an impressive feature set, including its Bluetooth functionality. The Bluetooth connection is smooth and reliable, extending a generous range that grants you the freedom to roam while maintaining control over your audio. Whether you're looking to pump up the volume for a backyard barbecue or craving some soothing tunes in the tranquility of your study room, the BT20A delivers outstanding performance with style and ease.
But what truly sets the Fosi Audio BT20A apart is not just its superb performance and compact design; it's the company's exceptional commitment to customer satisfaction. I experienced a minor hiccup with the Bluetooth connectivity of the first unit, but Fosi Audio's customer service was absolutely stellar. They promptly sent out a replacement, ensuring that the minor setback was resolved efficiently and I could get back to enjoying my music without delay.
Fosi Audio's willingness to stand by their product and swiftly address any issues is highly commendable. It's a testament to their dedication to providing a top-notch customer experience, further adding to the already spectacular appeal of the BT20A.
In conclusion, the Fosi Audio BT20A is a true titan in a compact package. Its powerful output, seamless Bluetooth connectivity, and Fosi Audio's stellar customer service make it an unparalleled choice for anyone looking to enhance their audio experience. If you're seeking a small, powerful, and reliable Bluetooth amplifier, I wholeheartedly recommend the Fosi Audio BT20A. It may be small in size, but it's big on performance.
This would do a great job in a dorm room, desktop near field, and the like. I have another like this (Ayima A7 Pro), using a WiiM streamer and Topping E50 DAC (with remote) for upgraded sound in an office, another with a WiiM, SMSL M300se DAC/headphone amp (again, remote), another (Fosi V3) in the workshop with Echo Link streamer, SMSL SU-1 DAC into Sony SSCS5 and Polk sub. You can litter these things all over the place.
If you wish to use a subwoofer, look for one with speaker terminals because this amp lacks a dedicated 3.5mm sub output. I've not used Bluetooth with any of them yet. Streaming from the phone is too easy.
If I were a student going back to college, I'd get a Class D amp like this, SMSL M300SE DAC as pre-amp. This would offer multiple inputs with the ability to power any speakers and, for study time, headphones. Where was this stuff years ago?
one thing i really like is the bluetooth addition. the sound quality is good and there is very little spurious noise. it is a preferential connection so it will override anything coming in from the AUX inputs. i wish there was a button to switch but as is, just turning off the bluetooth on your phone will cause it to automatically switch back.
overall, it's a good little unit. i wish it were closer to a $60 price point but build quality seems good and sound quality overall is great for this little guy. i'll probably buy another one to use as a portable outdoor entertainment like another reviewer did.
Top reviews from other countries
The audio quality is fantastic out of a small package. Whatever I throw at it, it just handles it. Be it my customer built enclosures or my reference Klipsch speakers. The connectively makes it easy to get up and running in no time without any hassle.
Highly recommend for anyone wanting to add Bluetooth functionally in there space or wanted a tiny amp for some bookshelf speakers. This is the one!
Reviewed in Canada on December 6, 2023
The audio quality is fantastic out of a small package. Whatever I throw at it, it just handles it. Be it my customer built enclosures or my reference Klipsch speakers. The connectively makes it easy to get up and running in no time without any hassle.
Highly recommend for anyone wanting to add Bluetooth functionally in there space or wanted a tiny amp for some bookshelf speakers. This is the one!
My Old amp stopped working so am using this amplifier as an temporary alternative to power a set of Solidaire SS100 bookshelf speakers with a 12-inch woofer, a 4-inch midrange, and a 1-inch horn tweeter with impedance of 8 Ohms.
Bluetooth range is also good. Comparable to my existing Logitech Bluetooth adapters.
I have noticed it does not get warm on long usage when listening at acceptable volumes at home.
The audio quality is flat and commendable in the Fosi amp, but I seem to miss the warmth my old Solidaire AS1200D amp provided. So, I tend to boost the lows and mids from the equalizer to get the desired effects.
My decision on buying this over Aimyia amp was swayed because FOSI provide a warranty on their product, but Aimyia brand amps have no such mention in their listings.
Reviewed in India on March 25, 2024
My Old amp stopped working so am using this amplifier as an temporary alternative to power a set of Solidaire SS100 bookshelf speakers with a 12-inch woofer, a 4-inch midrange, and a 1-inch horn tweeter with impedance of 8 Ohms.
Bluetooth range is also good. Comparable to my existing Logitech Bluetooth adapters.
I have noticed it does not get warm on long usage when listening at acceptable volumes at home.
The audio quality is flat and commendable in the Fosi amp, but I seem to miss the warmth my old Solidaire AS1200D amp provided. So, I tend to boost the lows and mids from the equalizer to get the desired effects.
My decision on buying this over Aimyia amp was swayed because FOSI provide a warranty on their product, but Aimyia brand amps have no such mention in their listings.
Wichtig war mir eine stabile und hochqualitative Bluetooth Verbindung.
Diese Erwartung wurde bestens erfüllt.
Positiv ist die Bass und Treble Regelung, welche kleinere Anpassungen erlauben, ohne das Klangbild zu sehr zu verfälschen.
Insomma un'ottima accoppiata. Il trasformatore è un pò ingombrante ma visti i watt di potenza che riesce ad erogare ci sta tutto.
Complimenti alla Fosi Audio, un ottimo prodotto.
Reviewed in Italy on December 27, 2023
Insomma un'ottima accoppiata. Il trasformatore è un pò ingombrante ma visti i watt di potenza che riesce ad erogare ci sta tutto.
Complimenti alla Fosi Audio, un ottimo prodotto.