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| Brand | Fosi Audio |
|---|---|
| Manufacturer | Fosi Audio |
| Model | BT20A |
| Model Name | Fosi Audio BT20A |
| Part Number | BT20A |
| Processor Brand | TI |
| Tuner Technology | QAM |
| Compatible Devices | Speaker |
| Special features | Clean sound;, Simple but powerful; |
| Amplifier Type | Class D Amplifier |
| Mounting Hardware | Quick Start Guide |
| Number of Items | 1 |
| Remote Control Description | Universal |
| Color Screen | No |
| Audio output mode | Stereo |
| Audio Output Type | Speakers |
| Speaker surround sound channel configuration | 2 |
| Output Wattage | 200 Watts |
| Voltage | 230 Volts |
| Wattage | 200 watts |
| Power source type | Ac 110v - 240v |
| Batteries included | No |
| Batteries Required | No |
| Wireless Standard | Bluetooth |
| Signal-to-noise ratio (dB) | 98 dB |
| Speaker Output Channel Quantity | 2 |
| Connector Type | Bluetooth, Aux |
| Mounting type | Door Mount |
| Includes rechargable battery | No |
| Includes Remote | No |
| Manufacturer | Fosi Audio |
| Language | English |
| Item model number | BT20A |
| Product Dimensions | 13.21 x 8.99 x 3.61 cm; 680.39 g |
| ASIN | B07BQC7GNL |
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From the brand
Home Audio Amplifier System
The perfect gift for music enthusiasts in life！
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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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Stereo Mini Power Amplifier
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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.
Product Parameters:
2.0 Channel Bluetooth Stereo Amplifier
- Power Adapter: 24V/4.5A / DC Input Range: 12-24V
- Terminating Impedance: 2 Ohm - 8 Ohm / MAX Power Output: 100W x 2
- THD ≤ 0.04% / SNR ≥ 98dB / Frequency Range: 20Hz - 20kHz (±1 dB)
- Input Mode: Bluetooth and RCA / Input Sensitivity ≤ 280mV
- Bluetooth Transmission Distance: Up to 50 Ft
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Hi-Fi Stereo Audio Amp
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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Easy to Fit Your System
Bass and Treble Control
Exclusively Designed for the Customers Who Pursue HiFi Sound.
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up to 50ft connection
Bluetooth Receiver Amplifier
Instant Setup with Phones, Tablets, and Almost Any Other Bluetooth-enabled Device.
1 Mini but Powerful 2 Easy to Operation 3 Bluetooth 5.0 Core
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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.
1 2.0 CH 2 High-Performance 3 Exquisite Design
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
 BT20A |  ZA3 |  BT20A PRO |  MC101 |  BL20C |  BT30D |  BT30D PRO | |
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Customer Reviews
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7,903
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172
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103
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130
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10
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622
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Type
| Bluetooth 2.0 CH Amp | 2.0 CH Amp | Bluetooth 2.0 CH Amp | Bluetooth 2.0 CH Amp | Bluetooth 2.1 CH Amp | Bluetooth 2.1 CH Amp | Bluetooth 2.1 CH Amp |
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MAX Power Output
| 100W x 2 | 155W x 2 / 235W x 1 | 300W x 2 | 100W x 2 | 160W x 2 | 50W x 2+100W | 165W×2+350W |
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Input
| Bluetooth + RCA | RCA+XLR | Bluetooth + RCA | Bluetooth + RCA | Bluetooth + RCA + U-disk | Bluetooth + RCA | Bluetooth + RCA |
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Output
| Passive Speakers | Passive SPK +Sub-out | Passive SPK+Active SPK/Sub/Amp | Passive Speakers | Passive Speakers + Active Sub | Passive SPK+Active/Passive Sub | Passive/Active SPK&Sub |
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Treble & Bass Control
| ✓ | × | ✓ | ✓ | x | ✓ | ✓ |
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THD
| ≤ 0.04% | <0.006% | ≤ 0.005% | ≤0.03% | ≤ 0.05% | ≤ 0.04% | ≤ 0.03% |
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SNR
| ≥ 98dB | ≥106dB | ≥108dB | ≥100dB | ≥ 98dB | ≥ 98dB | ≥ 108dB |
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Terminating Impedance
| 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 4-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm |
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Power Adapter
| 24V/4.5A | 48V/5A | 32V/5A | 24V/4.5A | 24V/4.5A | 24V/4.5A | 32V/5A |
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Work Voltage
| AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V |
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) |  |  |  | ![[Upgraded]AIYIMA A07 Pro TPA3255 Power Amplifier Bluetooth 5.2 300Wx2 HiFi Class D Stereo Digital Audio Amp 2.0 Sound Amplifier with Bass Treble Control& Line Output + Power Adapter](https://cdn.statically.io/img/m.media-amazon.com/images/I/41Zk-xhv-oL._AC_.jpg) |  | |
| Price | -23% $99.99 List: $129.99 | $149.99 | $119.99 | $129.99 | $136.99 | $95.99 |
| Delivery | Get it by Tuesday, Jul 9 | Get it by Tuesday, Jul 9 | Get it by Tuesday, Jul 9 | Get it by Tuesday, Jul 9 | Get it by Tuesday, Jul 9 | Get it by Tuesday, Jul 9 |
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| Sold by | Fosi Audio | Fosi Audio | Fosi Audio | Fosi Audio | Yima Top | DoukAudio |
| number of channels | 2 | 2 | 2 | 2 | 2 | 2 |
| voltage | 230 volts | 32 volts | 230 volts | 230 volts | 230 volts | 24.0 volts, 19.0 volts |
| mounting type | Door Mount | — | — | Tabletop | — | Surface Mount |
Reviews with images
Nice little amp.
For the size and price this is a nice unit. I have it set up in gym/entertainment/eternal storage room. I had 5 Logitech speakers left from Z906 system which unfortunately crapped the bed and ascended to warm analogue heaven of vacuum tubes in a puff of capacitor smoke. This amp does a really good job driving all 5 (which are 30W RMS each at 8 ohm). It was not designed to take 5 speakers but I made it work. It plenty loud, the clarity is good, there’s minimum hum though at full bass there’s distortion and the unit has a tendency to reset when driven at absolute max. Overall 5 star. Would recommend.
Top reviews from Canada
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Reviewed in Canada on December 6, 2023
Verified Purchase
Hands down this is one of my favorite amps to use. From the compact design, east of use, and power. It certainly offers a lot of value. The Bluetooth connects consistently each and every time, something that I often found a challenge with similar products.
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!
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!
Images in this review
Reviewed in Canada on May 16, 2024
Verified Purchase
Top reviews from other countries
Williams
Small, but Powerful. Great Support
Reviewed in the United States on May 20, 2023Verified Purchase
Magnus Hansson
En bra liten pryl.
Reviewed in Sweden on May 16, 2024Verified Purchase
James H
Great compact amplifier
Reviewed in the United Kingdom on May 14, 2024Verified Purchase
James H
Reviewed in the United Kingdom on May 14, 2024
As I used it in my office I needed a replacement and decided to order this amplifier.
I thought the Tangent Ampster was small, but this BT20A amplifier is ridiculously small!
This is mainly as the power supply is external to the amplifier, which itself is bigger than the amplifier.
I have it connected to a pair of Mission LX-1 MKII speakers, and I am happy to say that this amplifier easily runs these speakers, with no sign of distortion.
I appreciate the treble and bass controls, as by default the treble did sound lacking and a bit stifled.
The dials are nice and smooth, and the power switch toggle works without issue.
At this size and price you only get 1 set of RCA inputs and 1 set of speaker outputs, but for my use case this is fine.
Bluetooth works seamlessly, and the audio quality is about on par with direct RCA connection.
Be aware that if you connect via bluetooth it will override the RCA input, even with no music played over bluetooth.
I will say, as others have, that being able to connect to the amplifier via bluetooth without being asked for a code is a potential issue, I live in a block of apartments, so anyone could connect to it if they tried.
I don't hear any hissing when not playing music, so that is another plus.
Overall a great little amplifier for the price, once my other amp is back from repair I will probably relegate that to the living room as it has a remote control that is more useful.
Images in this review
marex77
Works Good
Reviewed in India on March 25, 2024Verified Purchase
marex77
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.
Images in this review
Marsia
Top
Reviewed in Belgium on January 7, 2024Verified Purchase