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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Let customers speak for us
from 5082 reviews
Just bought it and started using it with my IFI Zen Stack - feels awesome.
This was a natural pick for me, since I wanted to have a completely balanced setup for my HiFiMan Sundara.
Nothing much to add, if you want an optimal balanced setup without spending too much, then look no further.
Thanks AudioStore for being blazing fast with your delivery. I got it withing 48 hours of placing my order! Kudos.

For my HiFiMan Sundara, this is a nice quality 4.4 mm balanced cable. I am buying this for the second time, since the first one got destroyed by my kids.
If you are looking for a good quality 4.4 mm balanced cable, look no further.
Audio

This product is reached my expectation good purchase good audio signal transmission no noise at all.....thank you the audio store👍
Yes

I have used lots of TWS even high end of Samsung and Oppo worth 10K. But IEM sound signature is great! This is my second IEM. I had KZ-ZEX. It has dual driver with electrostatic. Compare with that MoonDrop Chu 2 is better clear and smooth sound signature even with single driver. I am using with Audiocular DAC cost 750. Just go with MoonDrop Chu 2 if you are music lover. Thanks.
Great packaging and quick delivery
Loved the theme of the store and the support of the customer service for every problem I faced. I would be interested in buying new things from the audio store in future.
Good Quality and got a clear case for the player.
Thank you 😊

The quality is great, I felt that the base got a bit reduced and mids and treble enhanced using the same. They look premium. The only downside is that they are slightly bulky as the cable is 16 core and sometimes you can feel it behind the ears. Overall a great cable to upgrade your entry level iems to support balanced output

After going through many websites, I came to know about this particular dac, which is purely oriented on audio amplification with dedicated chip unlike other dacs available under 2k, so ordered and received in two days, to my surprise it has significantly enhanced the audio experience on oneplus 13R, with wired earphones (redmi hi-res of 500 INR), usb type a to c adaptor really came into handy and detected as HiFi audio in my dell laptop, cherry on the cake was the pouch, I didn't expect a pouch, very happy with the purchase...

Visited thier store cum experience center it was very great place for sound lovers . Especially like their display of products in thier demo room.The Owner /Staff were cooperative and also suggested me several IEM's before i select one.

I was looking for IEM Tangzu but they were loud and bass was little low as per my ears.Owner or Associate at store suggested me Audicular i liked the sound as well as bass effect its great product.
The Sennheiser IE 200 delivers impressive value for the price. Comfort-wise, they’re lightweight and fit snugly thanks to the ergonomic design and included foam/silicone tips—great for long listening sessions. Build quality is solid despite the plastic housing, and the detachable braided cable adds durability. As for the sound signature, it’s balanced and clean—tight bass, clear mids, and smooth treble without harshness. Bonus points for the dual-tuning feature that lets you slightly tweak the sound. A fantastic entry-level choice for anyone looking to step into the audiophile world.
There sound is pretty good