Product Description

The Fosi Audio BT20A Pro is a new generation Bluetooth amplifier integrating the high-performance Texas Instruments 3255 amp chip, which can bring up to 300W power per channel and allows ultra-low distortion across the audio band and superior audio quality. With tone controls, you can adjust the treble and bass in catering to your own preference. The BT20A Pro is designed and made to bring you a whole new music enjoyment experience.

Experience Music in an Entirely New Way

A great budget HiFi gear to accompany your turntable, CD player, and speakers.

Bluetooth 5.0 Connection

Connect your mobile phone, tablet, or other Bluetooth devices easily and quickly.

Listen, Feel and Wonder

Personalized control knobs give a nice gradual increase or decrease, providing smooth gain and tame progression. Tone controls with midpoint potentiometers allow for pure original tone output.

It's Pro and Beyond

Your dream of having exceptional music will become true with this amplifier. It makes sound crystal clear and sweet which enables you to feel the power from music vibrating from your soul.

Easy to Reconnect

Press and hold the volume knob to clear a Bluetooth connection, making re-pairing more convenient and avoiding being hijacked.

Energy-Saving Circuit

Fosi Audio utilizes our specialized REAL-OFF technology which ensures the cleanest shutdown of the amplifier and costs no energy.

High-End Amp Chip Integrated

The TPA3255 chip, compatible with 24V~48V power supply, enables true premium sound quality and low power stage idle losses with class-D efficiency.

Replaceable Op-Amps

Replaceable Op-Amp Chip Choose your favorite op chips to replace the socketed NE5532 to have your preferred sound signature.

Advanced Inductors

High quality inductors ensure large and stable power output for the best listening experience.

Superior Audio Performance

The BT20A Pro amplifier provides you with high performance sound without issues. It delivers a clean, accurate sound when you are playing either classical or modern pop music.

Simple & Elegant Design
The operation panel is designed with simplicity in mind, making everything easier to modify.
Create Your Ideal Connections
Two ways to connect your devices and build an ultimate music system.

Product Details

Max Power Output: 300Wx2 @4Ω

SNR: ≥108dB

Terminating Impedance: 2-8Ω

THD: 0.005%

Power Amplifier Chip: TPA3255

Power Supply: 32V 5ADC

Input Range: 24V-48V

Frequency Response Range: 

Bluetooth Transmission Range: Up to 50Ft

Bluetooth Codec: AAC/SBC

Audio Input: RCA/Bluetooth
Audio Output: Speaker Output/3.5mm Pre-out

User Manual:                 Download


1. BT20A Pro × 1
2. User Manual × 1
4. Bluetooth Antenna × 1
5. 32V/5A Power Supply × 1


Register to Get the 30% Off Discount

BT20A Pro Contact Form

Win the New Release Giveaway


Step 1: Promote Fosi Audio BT20A Pro landing page to audio-related platforms. (This can include social media groups, forums, blogs, and other online communities that focus on audio equipment and technology. Just for reference: Facebook, Instagram, Twitter, Tiktok, reddit, audiosciencereview, audiokarma, avsforum...)


Step 2: Share your promotion efforts with Fosi Audio by sending us a message via Fosi Audio Global with links or screenshots of your posts.

Step 3: Wait for the announcement of the winner! Good luck!

📅This campaign will end on 5th April, we will choose the Top 10 with the most likes or views, and the winners will be announced on 10th April.