Small. yet Powerful

Fosi Audio BT20A Stereo 2.0 CH Bluetooth Amplifier

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Meet the Fosi Audio BT20A
Mini Amplifier

The Fosi Audio BT20A, in this regard, has been one of the best Pocket Amplifiers of 2022. Typically, this little device is a complete audio setup if you plan to build a sound system for your dorm, desktop, or office. We think the BT20A amplifier is the right choice for you to listen to and enjoy your music playlist on the go without any hassle of complicated installation.

2.0 Channel Bluetooth Stereo Amplifier

Treble Control & Bass Control

Even though Fosi Audio BT20A is less than four inches, it is tested for high-quality sound under extreme conditions. It is a powerful mini audio amplifier sufficient to power up prominent tower speakers. Also, this mini amp is designed to handle deep bass tones while producing hi-fi sounds that will make it a hit with audio enthusiasts.

Easily connects to smartphones, tablets, and almost any other Bluetooth-enabled device, the Bluetooth 5.0 chip maintains a strong, stable connection up to 50 feet for skip-free music.


Small Size with Powerful Features

Wireless Connectivity

Advanced Audio Controls

Passive Speaker Companion

Premium Sound Quality


Irresistible Design


Power Adapter: 24V/4.5A

DC Input Range: 12-24V

Terminating Impedance: 2 Ohm - 8 Ohm

MAX Power Output: 100W x 2

THD ≤ 0.04%

Frequency Range: 20Hz - 20kHz (±1 dB)

SNR ≥ 98dB

Input Sensitivity ≤ 280mV

Input Mode: Bluetooth and RCA

Bluetooth Transmission Distance: Up to 50 Ft