Beginner's review: Fosi C3 Gaming DAC

My journey to becoming an audiophile stemmed from my hobby in gaming. The urge to keep buying iems to get better “performance” in game led turned into appreciating audio in music with different equipment. As a result, the Fosi C3 felt like a good first desktop DAC for me.

Full disclosure: I was sent this for testing from Fosi but this is review is fully my opinion and has not been reviewed by Fosi

TL;DR - Great option for a convenient bridge between music-enjoyers and gamers

My journey to becoming an audiophile stemmed from my hobby in gaming. The urge to keep buying iems to get better “performance” in game led turned into appreciating audio in music with different equipment. As a result, the Fosi C3 felt like a good first desktop DAC for me.

Build and Design

The build quality feels fantastic. The only desktop “audio” piece I had beforehand was the Fifine SC3 which feels incredibly cheap in comparison. The C3 feels very hefty in hand with its full aluminum build. The controls and sliders design feels satisfying with a smooth sliders with a slight resistance. The buttons do feel slightly loose when fidgeting with them, but with normal use there should be no issue. The DAC takes up very little footprint on my desk and helps that it’s powered by a single USB-C cable.

Sound

Internally, the C3 features the XMOS XU316 and the Cirrus Logic CS43131. Coming from my first DAC being the Kiwi Ears Allegro mini, the first impression I have of the C3 through A/B testing is that the C3 seems more balanced compared to the fuller bass and warm sound signature with the Allegro Mini. This seems more tailored to gaming as it could assist with covering up sound cues like footsteps or reloading clicks in FPS games.

Gaming Features

The Fosi C3 leans into several gaming gimmicks that distiniguish itself from a traditional DAC. The C3 advertises itself with an AI footstep radar for specfic games which is said to analyze incoming game audio to isolate certain cues. In games like Valorant and CS2, I do hear the footsteps being louder, but it is still hard to attribute this to the C3’s AI vs. a simple EQ boost to the upper-mids and treble. However, I still appreciate being able to toggle this on and off easily on the C3 itself without a software. While I don’t game on a console myself, the ability to switch from UAC 1.0 to 2.0 and back without a software is nice in order to have a plug-and-play experience without any hassle.

Conclusion

Ultimately, the C3 doesn’t market itself as being the best desktop DAC, but a solid bridge between gaming and the audio. It sheds off the cheap feel of starter gear like the Fifine SC3 in favor of a robust aluminum build that doesn’t take up too much footprint on my desk. The XMOS and Cirrus architecture provides a balanced sound signature fitting for gaming while also making listening to music still enjoyable, making for a good upgrade for those starting out or looking to have a more convenient set up for both.