Description
Revolutionize Your Audio Experience with the Fosi Audio BT20A Pro 2-Channel Bluetooth Power Amplifier for Speakers
Unleash Sonic Brilliance: 300 Watts x2 Power Output
Immerse yourself in unparalleled audio clarity with the Fosi Audio BT20A Pro. Boasting a formidable 300 Watts x2 power output, this amplifier redefines your listening experience. The cutting-edge TI TPA3255 chip, featuring an advanced feedback design and a proprietary high-speed gate driver error correction, ensures not only exceptional audio performance but also high power efficiency, with idle losses below 2.5W.
Enhanced Efficiency: Tailor Your Sound with Upgraded Op-Amps
Experience a new level of efficiency with the BT20A Pro. Upgradeable with plug-ins like SS3602, MUSES02, OPA2604AP, and OPA2134PA Op-Amps, the amplifier offers a customizable sound quality experience. Enjoy an impressive SNR≥108dB and minimal THD≤0.005%, setting the stage for an audiophile-grade sound journey.
Seamless Connectivity: Bluetooth 5.0 Unleashed
Immerse yourself in the world of wireless connectivity with Bluetooth 5.0. Clear pairing is at your fingertips—just press and hold the volume control for five seconds. The amplifier also boasts a Bluetooth memory function, making future connections a breeze. Stay connected and receive alerts with an audible tone, ensuring an uninterrupted audio experience.
Precision Sound Control: Craft Your Sonic Landscape
Tailor your audio landscape with the BT20A Pro's unique sound control features. Revel in a wide range of bass and treble controls, or balance them for an unadulterated, original sound. Whether you prefer enhanced bass, heightened trebles, or the purity of unaltered audio, this amplifier caters to your preferences.
What's in the Box: Everything You Need for Audio Excellence
Your purchase includes the BT20A Pro Power Amplifier, a Bluetooth Antenna, a 32V 5A Power Adapter (with a plug that matches your country of delivery), an AC Cord, and a comprehensive User Manual. Enjoy peace of mind with our worry-free 12-month warranty and our commitment to friendly customer service.
Elevate Your Audio Universe with the Fosi Audio BT20A Pro—Where Sound Excellence Meets Innovation.
Model: BT20A PRO
Output Power: 300Wx2 @4Ω
Terminating Impedance: 2-8Ω
Input Mode: Bluetooth + RCA
Output Mode: Passive Speakers + Pre-out
Frequency Range: 20Hz-20kHz(±1.2dB)
THD: ≤0.005%
SNR : ≥108dB
Chip Set: TPA3255
Bluetooth Transmission Distance: Up to 50Ft
Bluetooth Transmission Format: SBC/AAC
Device Dimension: 5x5x1 inches
DC Input Range: 24-48V
Power Supply: 32V 5A
Warranty Period: 1 Year
What‘s in the box?
BT20A Pro Power Amplifier x 1
Bluetooth Antenna x 1
32V 5A Power Adapter x 1
AC Cord x 1
User’s Manual x 1
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
Cable: 1-month warranty only for manufacturing defects only
Fosi Audio is a dynamic brand dedicated to providing the most comprehensive range of Hi-Fi audio products in the market. We cater to passionate audiophiles by offering Hi-Fi products, DIY kits, and expert guidance, ensuring an immersive audio experience. Beyond a mere transaction, we foster enduring relationships with our clients, supporting them throughout their audio journey.
Our diverse product lineup includes the Hi-Fi power amplifier, pre-amplifier, headphone amplifier, DAC, music player, Bluetooth receiver, DIY board, DIY chassis, and an array of DIY kits. These meticulously crafted offerings embody our commitment to exceptional sound quality and innovation.
Established in China in 2017, Fosi Audio was founded by a team of devoted audiophiles. Our products have gained significant popularity within the Chinese DIY audio community, amassing a large and dedicated following. To expand our reach beyond borders, we launched this website in 2017 and began offering a selection of products on Amazon under the name "Fosi audio." However, please note that many of our outstanding products are not yet available on this website or Amazon. If you cannot find what you're looking for, simply reach out to us via email, and we will be delighted to assist you in finding the perfect product to meet your needs.
At Fosi Audio, we are not just a brand; we are your partner in achieving audio excellence. Join us on this immersive sonic journey and experience the true essence of Hi-Fi audio.

Description
Revolutionize Your Audio Experience with the Fosi Audio BT20A Pro 2-Channel Bluetooth Power Amplifier for Speakers
Unleash Sonic Brilliance: 300 Watts x2 Power Output
Immerse yourself in unparalleled audio clarity with the Fosi Audio BT20A Pro. Boasting a formidable 300 Watts x2 power output, this amplifier redefines your listening experience. The cutting-edge TI TPA3255 chip, featuring an advanced feedback design and a proprietary high-speed gate driver error correction, ensures not only exceptional audio performance but also high power efficiency, with idle losses below 2.5W.
Enhanced Efficiency: Tailor Your Sound with Upgraded Op-Amps
Experience a new level of efficiency with the BT20A Pro. Upgradeable with plug-ins like SS3602, MUSES02, OPA2604AP, and OPA2134PA Op-Amps, the amplifier offers a customizable sound quality experience. Enjoy an impressive SNR≥108dB and minimal THD≤0.005%, setting the stage for an audiophile-grade sound journey.
Seamless Connectivity: Bluetooth 5.0 Unleashed
Immerse yourself in the world of wireless connectivity with Bluetooth 5.0. Clear pairing is at your fingertips—just press and hold the volume control for five seconds. The amplifier also boasts a Bluetooth memory function, making future connections a breeze. Stay connected and receive alerts with an audible tone, ensuring an uninterrupted audio experience.
Precision Sound Control: Craft Your Sonic Landscape
Tailor your audio landscape with the BT20A Pro's unique sound control features. Revel in a wide range of bass and treble controls, or balance them for an unadulterated, original sound. Whether you prefer enhanced bass, heightened trebles, or the purity of unaltered audio, this amplifier caters to your preferences.
What's in the Box: Everything You Need for Audio Excellence
Your purchase includes the BT20A Pro Power Amplifier, a Bluetooth Antenna, a 32V 5A Power Adapter (with a plug that matches your country of delivery), an AC Cord, and a comprehensive User Manual. Enjoy peace of mind with our worry-free 12-month warranty and our commitment to friendly customer service.
Elevate Your Audio Universe with the Fosi Audio BT20A Pro—Where Sound Excellence Meets Innovation.
Model: BT20A PRO
Output Power: 300Wx2 @4Ω
Terminating Impedance: 2-8Ω
Input Mode: Bluetooth + RCA
Output Mode: Passive Speakers + Pre-out
Frequency Range: 20Hz-20kHz(±1.2dB)
THD: ≤0.005%
SNR : ≥108dB
Chip Set: TPA3255
Bluetooth Transmission Distance: Up to 50Ft
Bluetooth Transmission Format: SBC/AAC
Device Dimension: 5x5x1 inches
DC Input Range: 24-48V
Power Supply: 32V 5A
Warranty Period: 1 Year
What‘s in the box?
BT20A Pro Power Amplifier x 1
Bluetooth Antenna x 1
32V 5A Power Adapter x 1
AC Cord x 1
User’s Manual x 1
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
Cable: 1-month warranty only for manufacturing defects only
Fosi Audio is a dynamic brand dedicated to providing the most comprehensive range of Hi-Fi audio products in the market. We cater to passionate audiophiles by offering Hi-Fi products, DIY kits, and expert guidance, ensuring an immersive audio experience. Beyond a mere transaction, we foster enduring relationships with our clients, supporting them throughout their audio journey.
Our diverse product lineup includes the Hi-Fi power amplifier, pre-amplifier, headphone amplifier, DAC, music player, Bluetooth receiver, DIY board, DIY chassis, and an array of DIY kits. These meticulously crafted offerings embody our commitment to exceptional sound quality and innovation.
Established in China in 2017, Fosi Audio was founded by a team of devoted audiophiles. Our products have gained significant popularity within the Chinese DIY audio community, amassing a large and dedicated following. To expand our reach beyond borders, we launched this website in 2017 and began offering a selection of products on Amazon under the name "Fosi audio." However, please note that many of our outstanding products are not yet available on this website or Amazon. If you cannot find what you're looking for, simply reach out to us via email, and we will be delighted to assist you in finding the perfect product to meet your needs.
At Fosi Audio, we are not just a brand; we are your partner in achieving audio excellence. Join us on this immersive sonic journey and experience the true essence of Hi-Fi audio.
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OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
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Let customers speak for us
from 4804 reviews
i think it's a great choice for someone who's just starting with the "iem" audiophile thing and it sounds good pretty good for the price range, it's sound clear and crisp, the bass is a little on the lower side but nonetheless great product if you are just starting, oh and yes the delivery was fast got it in a day.

Delivery was fast and item received was in good condition

Lets get to the point, its the best budget IEM!
I have been in the IEM space for more than 6 months and I was looking for a daily driver that can handle rough use, and then Pritam Sir suggested me 7Hz G1. And it failed to disappoint me!
A nice high quality well built iem, with one of the best ergonomic design, and a proper sound isolation with tons of tip to choose from.
The iem is well tuned with proper instrument seperation and clarity, warm tuning with perfect bass and excellent soundstage compared to other budget IEMs.
If you are new to yo IEM and want to buy your first IEM, blindly go with this! Trust me you would not regret! For 3.2k, its a steal deal!
(Pro Tip: Always listen to Pritam Sir's suggestions. He is the G.O.A.T)

We had an amazing experience at The Audio Store. Pritam, the shop expert, was incredibly helpful and knowledgeable. He patiently guided us through the world of in-ear monitors, explaining all the details and helping us understand what would work best for our band, Rhythm Freak. He suggested options that perfectly matched both our budget and our musical needs, making sure we got the best value without compromising on quality. Thanks to his expertise, we walked out confident and satisfied with our purchase. Highly recommend this store to any musician looking for top-notch gear and excellent service

Sound quality ausom but not for base lover's

Top notch earphone Mike quality 🔥.gaming, music etc highly recommend ❤️🎧

I believe this is the best tws under 10000 rupees also it is an iem

Thank you audio store. The sound is amazing. It was delivered within time and product was perfect.

Very detail iem for the price not bass heavy

It is compact and yet have a good punch to the output it gives, the packaging was very impressive for the price.

Twilight from Soft Ears seems to me like a benchmark for single DD IEMs. The solid metal craftsmanship is commendable and when it comes to the sound, tonality, song signature and quality is presently benchmark for Single DD IEMs, may be rivalled by the Elder turii ti, which cost 3x of this.

I would really recommend these. I previously used KZ Castor, but these IEMs are a major upgrade. The sound division is really good. The only issues are low bass and high treble. If you want a more balanced or v shape, it is better to use an equaliser. I am using these with Fiio K1 and Audiocular X Tiandirenhe CS-PRO DACs. Both give a nice output.
I don't know if this is specific to Apple Music or IE 200, but when I push the music through an equaliser, I hear a crackling sound (only on hi-res, 24-bit/192 kHz). I will maybe test more on this and will update the review.
Finally, I would recommend it. These IEMs are worth the buck.

One of the best dac amp in budget category, it gives balance output that going well with my performer 8.

It's an interesting product. I like all the tip options in this pack. It's a good beginner pack to know how each tip material can affect the sound quality. All the tip material & quality are good. The silicone tips & foam tips in the pack are good, like those stock tips we get with IEM. But the surprising tips are the latex tip & the hybrid foam tip. Although the latex tip feels a little rubbery in feel & is a dust magnet, but it's very comfortable, provides a good seal and does enhance bass & treble response slightly. And for the hybrid tip, it's like best of both worlds. It gives the comfort of a silicone tip as well as provides the seal of a foam tip. I'm not a big fan of foam tip in general because of how they feel in ear & it's very difficult to put them in the ear, but these hybrid tips removed all those problems for me.

This is one of the best modular cables I have ever seen in this price range. Microphonic is there as the nylon type of material is used for wrapping the cable. But microphonic is very minimal compared to other similar cable I have used. But, once the music starts playing, the microphonic would be gone. connector quality is very premium, on both the 3.5 / 4.4 termination as well as at 2-pin connector end. I love how easy is to replace the 3.5 & 4.4 end. It's highly recommended if you are looking for any premium modular cable on budget. It's one of my favorite modular cables along with the Moondrop aria 2's stock modular cable.