Brand | Fosi Audio |
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Manufacturer | fosiaudio |
Model | BT20A Pro |
Part Number | BT20A Pro |
Voltage | 32 Volts |
Batteries Required | No |
Connector Type | bluetooth, auxiliary |
Manufacturer | fosiaudio |
Item model number | BT20A Pro |
Parcel Dimensions | 26 x 18.9 x 5.9 cm; 1.12 kg |
ASIN | B0C9WVS39Y |
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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
Purchase options and add-ons
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.
Frequently bought together
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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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Stereo Mini Power Amplifier
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Product guides and documents
Product Description
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
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Bluetooth 5.0 Connectivity
Allowing you to connect your devices such as mobile phones and tablets from a greater distance.
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Unique Design for Sound Control
Experience the authentic sound without any added effects by adjusting them to their middle points.
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Full-range Pre-Out Output
Easily connect to a powered subwoofer, speaker, or another amplifier for versatile audio options.
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.
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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Texas Instrument TPA3255 Chip
Has a unique smart algorithm that optimizes the output stage for max efficiency and min distortion.
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Upgrade Audio Performance
Achieve a Distinct and Exceptional Sound Quality
The two plug-in NE5532 Op-Amps can be replaced by LME49720HA/MUSES02/OPA2134PA Op-Amps, etc.
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High Precision and Stability Inductance Values
Low DC resistance and excellent frequency characteristics which improve performance
Fosi Audio Amp Comparison
Bluetooth 2.0 CH Amp | Type | 2.0 CH Amp |
300W x 2 | MAX Power Output | 155W x 2 / 235W x 1 |
Bluetooth + RCA | Input | RCA+XLR |
Passive SPK +Pre-out | Output | Passive SPK+Sub-out |
| Treble&Bass Control | |
≤ 0.005% | THD | <0.006% |
≥108dB | SNR | ≥106dB |
Bluetooth 2.0 CH Amp | Type | Bluetooth 2.0 CH Amp |
300W x 2 | MAX Power Output | 100W x 2 |
Bluetooth + RCA | Input | Bluetooth + RCA |
Passive SPK +Pre-out | Output | Passive Speakers |
| Treble&Bass Control | |
≤ 0.005% | THD | ≤0.03% |
≥108dB | SNR | ≥100dB |
Bluetooth 2.0 CH Amp | Type | Bluetooth 2.0 CH Amp |
300W x 2 | MAX Power Output | 100W x 2 |
Bluetooth + RCA | Input | Bluetooth + RCA |
Passive SPK +Pre-out | Output | Passive Speakers |
| Treble&Bass Control | |
≤ 0.005% | THD | ≤ 0.04% |
≥108dB | SNR | ≥ 98dB |
Bluetooth 2.0 CH Amp | Type | Bluetooth 2.1 CH Amp |
300W x 2 | MAX Power Output | 165W×2+350W |
Bluetooth + RCA | Input | Bluetooth + RCA |
Passive SPK +Pre-out | Output | Passive SPK +Pre-out |
| Treble&Bass Control | |
≤ 0.005% | THD | ≤ 0.03% |
≥108dB | SNR | ≥108dB |
Compare with similar items
This Item 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 | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $149.99$149.99 | -23% $99.99$99.99 List: $129.99 | $89.99$89.99 | $119.99$119.99 | $109.99$109.99 | $269.99$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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Product information
Technical Details
Additional Information
Date First Available | Oct. 7 2023 |
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Customer Reviews |
4.6 out of 5 stars |
Best Sellers Rank | #5,038 in Electronics (See Top 100 in Electronics) #12 in Audio Component Amplifiers |
Feedback
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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Top reviews from Canada
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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.
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 😀
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.
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.
Reviewed in Canada on March 9, 2024
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.