Fosi Audio DA2120C

Bluetooth 5.0 Stereo Hi-Fi 2.1 Channel Mini Amplifier

Loud, clear and powerful

  • Upgrade your speakers and subwoofer with a 120W@4ohm x2-channel amplifier, high-fidelity streaming music.
  • Bluetooth 5.0 amplifier with aptX LL let you stream music and stereo sound in crisp.
  • With a 6dBi high gain antenna for long range streaming up to 65 ft(20m) in a complex wall structure.
  • With a world of input mode options, DA2120C is always getting satisfy in different occasions.
  • Built with multiple input of Bluetooth/USB/optical/coaxial/RCA, including a remote control that infrared adjust the inputs mode/volume/bass/treble/EQ/mute/loudness setting ect.

An amazing amp with the right controls

Drive passive speakers + active subwoofer
The DA2120C amp delivers outstanding sound from a wide variety of inputs, both analog and digital (yep, it's also an excellent DAC).
Hi-Fi Stereo Sound
The system sounds amazing and is perfect for the space. The amp has the standard, minimal set of features you would expect. The BT is 5.0 and sounds fantastic.


Power, Simplicity and Value

Flat response - tiny footprint

Works Great with Active Sub

Powerful little receiver!

High end sound

Stereo anywhere!


THD: ≤ 0.01%

SNR: ≥ 105dB

Power Supply: 32V 5A

Frequency Range: 20Hz - 20kHz (±1 dB)

Bass frequency: 20Hz-200Hz

System Supported: XP/W7/W8/W10/MAC/Linux

Size: L180*W130*H38mm (7*5*1.5in)

USB Chip: Cmedia CM6642 SUPPORT 24bit/192Khz;

Amplifier Chip: American TI TAS5352A

Bluetooth Chip: Qualcomm QCC3031 Bluetooth 5.0 chip supports aptX, aptX-HD, SBC, AAC

DAC Chip: American Cirrus CS8422 chip USB, coaxial optical fiber Supported sampling rate 24bit/192Khz

Output Power: 2 × 125W at 10% THD+N Into 4 Ω 2 × 100W at 10% THD+N Into 6 Ω 2 × 80W at 10% THD+N Into 8 Ω

#fosi audio - Customer in action


I like the look and build quality, the led screen is simple but nice. The main thing for me is that it lets you adjust the treble and bass levels. I have mine hooked up to a powered subwoofer with a single cord (but i think it allows more?) The cool thing is that i'm able to turn down the bass level on the amp, but then at the same time turn up the base level on my sub.
Kyle l.
September 14, 2020
This little amp really surprised me. In a small package it packs quite a punch with clarity and musicality. When paired with some 3 ohm high efficiency speakers I can't hear any noise at high volume levels and it has a really enjoyable dynamic sound when in a large 21x16 room with high ceilings over the bluetooth connection.
Joe V
February 22, 2021
Don’t let the price or all wacky translation stuff scare you off. These through two 20 year old 8 ohm 120w JBL N26II bookshelf speakers jams like something that should costs thousands. No subwoofer needed. I’ve got the pre set EQ off or what they call “hi-if”. Bass at 2+ and treble at 4+. Great tones from Tidal and I-Tunes Bluetooth and for my bedroom PlayStation used for Netflix and Blueray movies. Amazing!!!!
April 16, 2021
Nice mini amp. I bought it to replace the Fosi BT20A which sounded full, open and clear, but lacked a sub out and could not get as loud as I’d like. This amp does not disappoint. It has enough power to drive my 6 ohm Infinity R263’s and 4 ohm Emotiva’s to uncomfortably loud volumes in a wide open space (~30x14x9) that opens up to a sitting room.
Trev Snider
March 27, 2021