Fosi Audio BT20A Pro 300W x2 TPA3255 Home Audio Bluetooth 5.0 Stereo 2 Channel Amplifier Receiver Mini Hi-Fi Class D Upgraded Integrated Amp for Speakers with Bass Treble Control

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Voltage 32 Volts
Manufacturer fosiaudio
Maximum supply voltage 32 Volts
Brand Fosi Audio
Number of channels 2

About this item

  • TI TPA3255 Chip Amplifier with 300 Watts x 2 Power Output: Advanced feedback design and high-speed gate driver error correction for efficient and high-quality audio performance, with low idle losses of <2.5W.
  • Upgraded High-Efficiency: A significant upgrade from the BT20A amplifier with replaceable Op-Amps for customized. You can replace the two plug-in NE5532 Op-Amps with LME49720HA/MUSES02/OPA2604AP/OPA2134PA/LM4562/NJM4556AD Op-Amps to achieve a unique sound quality. With SNR≥108dB and THD≤0.005%.
  • Enhanced Bluetooth 5.0 Connectivity: The Bluetooth pair can be cleared by pressing and holding the volume control for five seconds. In addition, it has a memory Function for Easy Pairing and Alert Tone.
  • Customizable Sound with a Wide Range of Bass and Treble Controls: The BT20A Pro home audio amplifier offers a unique design for sound control. Enjoy original sound without effects by setting treble and bass effects to the middle point.
  • What you Get: BT20A Pro Power Amplifier x1, Bluetooth Antenna x1, 32V 5A Power Adapter x1, AC Cord x1, User Manual x1, our worry-free 24-month warranty, and friendly customer service.

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Product Description

bluetooth amplifier
bluetooth amplifier
The upgraded version of Fosi Audio BT20A

Fosi Audio BT20A Pro 600W TPA3255 Bluetooth 2.0 CH Amplifier

  • Input: Bluetooth + RCA; Output: Passive Speakers + Pre-out
  • Amp chip: TPA3255; MAX Output Power: 300Wx2@4Ω
  • THD: ≤ 0.03%; SNR: ≥108dB; Frequency Response rRange: 20Hz-20kHz(±1.2dB)
  • Bluetooth Distance: ≥15m; Bluetooth Transmission Format: SBC/AAC

High Efficiency

Energy-efficient

The 2-channel amplifier uses a low standby power feature that reduces the power consumption when the amplifier is not in use, contributing to energy savings.

300W x2 TPA3255 Bluetooth 5.0 Home Audio Amp

Stunning Bluetooth Design

Clear the Bluetooth pairing by holding the volume control for five seconds. Benefit from easy pairing with the memory function and an alert tone.

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Fosi Audio BT20A Pro 300W x2 TPA3255 Home Audio Bluetooth 5.0 Stereo 2 Channel Amplifier Receiver Mini Hi-Fi Class D Upgraded Integrated Amp for Speakers with Bass Treble Control
Fosi Audio BT20A Pro 300W x2 TPA3255 Home Audio Bluetooth 5.0 Stereo 2 Channel Amplifier Receiver Mini Hi-Fi Class D Upgraded Integrated Amp for Speakers with Bass Treble Control
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Price$149.99-23% $99.99
List:$129.99
$89.99$119.99$109.99$269.99
Delivery
Get it by Sunday, Jul 14
Get it by Sunday, Jul 14
Get it by Sunday, Jul 14
Get it by Sunday, Jul 14
Get it by Sunday, Jul 14
Get it by Sunday, Jul 14
Customer ratings
Sound quality
4.5
4.3
4.4
4.5
4.7
Volume control
4.3
4.4
4.6
4.1
4.7
Value for money
4.6
4.4
4.4
Quality of material
4.5
4.2
4.8
Remote Control
4.0
3.7
2.3
Sold by
Fosi Audio
Fosi Audio
Fosi Audio
Fosi Audio
Fosi Audio
Fosi Audio
number of channels
2
2
1
2
2
voltage
32 volts
230 volts
240 volts
230 volts
24 volts
110 volts

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Fosi Audio BT20A Pro 300W x2 TPA3255 Home Audio Bluetooth 5.0 Stereo 2 Channel Amplifier Receiver Mini Hi-Fi Class D Upgraded Integrated Amp for Speakers with Bass Treble Control


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Customer reviews

4.6 out of 5 stars
4.6 out of 5
105 global ratings
So far so good!
5 Stars
So far so good!
Needed an economical solution to connect my outdoor speakers to a Bluetooth amp. The Fosi does the job! And hundreds of dollars cheaper than Bose! The Bluetooth drops off every once and awhile, but I think that is more my iPhone issue and not the Fosi! I’m only a couple of weeks in with the new amp, but so far so good! For sure recommend!
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Top reviews from Canada

Reviewed in Canada on May 3, 2024
Verified Purchase
I've been into home audio for almost 40 years since I was a teen and this little amp brought me back to those great days of excitement for new gear.

The feature set is rather rich considering the small form factor and the astoundingly affordable price for the power it produces.

This is the definition of bang for the buck.

I did have a minor issue with the first one I received as it seemed to have a short somewhere and made a rather bad aroma from something popping when I plugged it in.

I notified their support about this and I have found very few companies who are as customer focused as Fosi.

The support staff were incredibly helpful and accommodating (Thank you Kathy) and A new device was sent out immediately.

After a minor shipping problem with the local postal service I received the new amp and after getting it out and checked I plugged it in and I am so happy with this.

The BT connectivity is rock solid up to about 20 metres and works through out my home. It does connect automatically on start so you will have to shut it off to use the other inputs.

I also use a small DAC with this and have founf that in most circumstances this amp will do what you need and do it very, very well.

Power to drive speakers is assured as I have used this to drive everything from small KEF speakers to big old BOSE 601s and it even makes the old vintage gear sound pretty good.

The amp does have swappable op-amps and depending on the sound type you like there and many types you can use but the included amps work very well.

This somewhat does add some colour to the music but not in a bad way but as a heightened pronunciation so to speak. When use with smaller speakers and a subwoofer using the included output this little powerhouse just shines,

The construction is excellent with a solid steel case and rock solid build with cool contrasting orange volume knob.

The knob-feel (TM John Darko) is great with noticeable detents in the centre and excellent progression feel.

I have also examined the original faulty unit they sent and after examining the board inside it seems the unit was fine and does now work again but it had been rattled so badly in shipping that a chip had slightly dislodged causing the power input to short and burn some of the shielding.

This is not a flaw from the factory as I have since examined a couple more of these units and they are all extremely well made and my issue was a very rare indeed occurrence. I have since repaired the original damaged unit and am using it as a testbed evaluating unit for other reviews now.

All in all this is a tremendously capable amplifier for the audiophile or the new audio fan.

Recommended purchase and an absolute amazing value.
Reviewed in Canada on June 17, 2024
Verified Purchase
This little beast sounds amazing and is reasonably powerfull for the size. Can’t go wrong for 159$ Canadian. I have it hook up on B&W 602 series (1992) and it can blast!

IMPORTANT INFO: don’t buy the 48 Volt power supply like some poeple say in other reviews. Use the 32 Volt power supply provided. The stronger 48 Volt power supply will shut off your Fosi amp if you push the volume. With the 48 Volt power supply it does sound a bit louder but not better. You can get all the power you need from the original power supply provided with this FOSI BT20A Pro ! Enjoy 😀
Reviewed in Canada on January 24, 2024
Verified Purchase
I saw another review about the volume knob being "loose" and assumed it was a one off defect as I did not see others mention same thing. Well, unless mine is the second one to exhibit this, it's an issue with all the units. The volume knob just doesn't feel secure at all. It has a couple of millimetres of travel before it actually responds. It really makes the device feel very cheap. Considering there are only three knobs on this and that the volume is the most used one, it's impossible to ignore this.

Other than that, the sound quality is very good and the device does what it is supposed to do. Overall, I am happy with it.

Another issue was using the pre-out to my JBL subwoofer. When powering down the amp it would cause a loud boom/pop sound coming from the sub. I never had issues like this before with the sub using my older Yamaha amp. I used a second Samsung sub that I keep as a backup to see if it was the sub and it did the exact same thing. I don't know how to address this. For now, I have disconnected the sub in hopes to find a solution.
2 people found this helpful
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Reviewed in Canada on February 23, 2024
Verified Purchase
This is my second Fosi Audio Amp with the TPA-3255 chip! (the TB10D without bluetoooth and this one). They both sound great with no "hissing" sound even wide opened with a very low input signal. They both came with the 32V 5A power supply which won't give you 600 Watts but it's quite enough to power two 150 watts tower speakers or good bookshelf speakers! No distortion and great bass just like the good old amps with the loudness button. The treble is also excellent. Great bluetooth reception and NO LAG when listening to a YouTube video using my Android tablet unlike my bluetooth speakers. Great product and built to last!
One person found this helpful
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Reviewed in Canada on October 27, 2023
Verified Purchase
I picked this up to replace an old giant Denon amp I was using for a turntable and my computer. Fit the bill perfectly. Driving large Mission floor speakers easily. Phono attached to RCA and computer over BT. I do wish I could manually switch from BT to RCA since BT takes priority but that’s ok—I’ll just turn it off at the computer. At any rate, sounds fantastic, love the treble/bass control, and the size is really great for my set up. Oh—get banana clips!
2 people found this helpful
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Reviewed in Canada on April 26, 2024
Verified Purchase
Brought a house with ceiling speakers roughed. Hooked this up to the speakers in the kitchen, then renamed a spare google home mini as "Kitchen Speakers" and made this FosiAudio Amp the default Bluetooth speaker. Now all I have to say is "play xxxxxxxxxxx on kitchen speakers" and it runs and sounds like a dream. I ended up buy a couple of these so now I have smart home speakers in most rooms for a fraction of the price.
One person found this helpful
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Reviewed in Canada on March 9, 2024
Verified Purchase
This is a great little amp but anyone in range can connect to the Bluetooth as there is no manual process of pairing. Therefore, if you live in an apartment, duplex, or just have others with a smart device, they can connect at anytime this amp is on.

The solution would be to require the user to press a button on the amp to enable a pairing mode.

As for the hardware, it's good but the volume knob feels loose as it wiggles and has a lot of slop. Also, the detent on the bass knob is slightly off and does not line up at center.

A solution would be to accurately line up the knobs and ensure a tighter tolerance in the manufacturing process.
Customer image
3.0 out of 5 stars Fundamental Bluetooth Flaw - Any Unwanted Person Can Connect
Reviewed in Canada on March 9, 2024
This is a great little amp but anyone in range can connect to the Bluetooth as there is no manual process of pairing. Therefore, if you live in an apartment, duplex, or just have others with a smart device, they can connect at anytime this amp is on.

The solution would be to require the user to press a button on the amp to enable a pairing mode.

As for the hardware, it's good but the volume knob feels loose as it wiggles and has a lot of slop. Also, the detent on the bass knob is slightly off and does not line up at center.

A solution would be to accurately line up the knobs and ensure a tighter tolerance in the manufacturing process.
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4 people found this helpful
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