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Fosi Audio C3

AI-Powered Gaming Sound Card & DAC/Amp

AI-Enhanced Footsteps | Hear What Matters

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C3 Kickstarter Early Access

Make a $9.90 deposit to unlock exclusive campaign rewards, including a 25% discount and a special physical gift for early supporters.

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Hear the Difference. React Faster.

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Hi-Fi Sound, Beyond Gameplay

With audiophile-grade components, C3 reveals subtle details in game audio, adding depth and realism without altering the original sound design.

Fosi Audio C3

AI-Powered Gaming Sound Card & DAC/Amp

AI-Enhanced Footsteps | Hear What Matters

Thank you for subscribing.

Subscribe to Unlock Your Early-Bird Offer

Thanks for contacting us. We'll get back to you as soon as possible.

C3 Kickstarter Early Access

Make a $9.90 deposit to unlock exclusive campaign rewards, including a 25% discount and a special physical gift for early supporters.

Alt image Alt image Alt image

Secure Your C3 Kickstarter Rewards:


 1. $9.90 deposit to reserve benefits

2. 25% Secret Reward access

3. Bonus physical gift after campaign

Follow on Kickstarter

Make Your Deposit

Why C3 Isn't Just Another Gaming Sound Card?
Why C3 Isn't Just Another Gaming Sound Card?

Fosi Audio C3

Traditional Gaming Sound Card

Footsteps Lost in the Chaos?
Footsteps Lost in the Chaos?

A FPS-trained AI That Knows What to Listen For

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Hear the Difference. React Faster.

Hi-Fi Sound, Beyond Gameplay

With audiophile-grade components, C3 reveals subtle details in game audio, adding depth and realism without altering the original sound design.

Surround Feel Missing?
Surround Feel Missing?

Hardware-Level 7.1 
That Rebuilds the Space

Spatial processing rebuilds direction and distance cues for a wider, deeper scene, providing more presence in games and films.

Your Team Can’t Hear You Right?
Your Team Can’t Hear You Right?

AI Noise Reduction with Ultra-Low Latency

Filters out background noise like keyboard clicks, keeping your voice clean and clear with <50ms real-time processing.

Practical Controls for Clear Communication

Preset & Custom Audio Profiles Supported
Preset & Custom Audio Profiles Supported

Web-Based Control Panel

Switch between presets or fine-tune your sound with PEQ controls, all through a clean, browser-based interface, no software required.

Check the details

Designed for the Desktop
Designed for the Desktop
Rich Connectivity, Thoughtful Controls
Rich Connectivity, Thoughtful Controls
Built for Gaming Headsets and Desktop Speakers
Built for Gaming Headsets and Desktop Speakers
Specifications
Specifications

General Specs

Chipset

XMOS XU316 + CS43131 + TPA6120*2

Maximum Sampling Rate

UAC 2.0:PCM 32-bit/384kHz; DSD256

UAC 1.0:PCM 16-bit/48kHz

OPT:PCM 24-bit/192kHz

COAX:PCM 24-bit/192kHz

Supported Headphone Impedence

16-300Ω

Input

Coaxial, Optical, USB-C (Power & Data), 3.5mm Microphone

Output

3.5mm Headphone, RCA

Firmware Update

USB-C Online Update

Input Voltage

DC 5V

PEQ Page Link

https://cc.fosiaudio.com

USB Driver

Required for DSD/Foobar2000

Windows 7/8/8.1/10/11 (Driver Required)
Mac OS X 10.6+, Linux (Driverless)

Audio Parameters

3.5mm Headphone Output (UAC)

Rated Power Output

L+R ≥ 320mW+320mW (32Ω / THD+N < 1%)

SNR

121dB (A-weighting)

THD+N

0.0004% (A-weighting)

Dynamic Range

121dB

Noise Floor

≤3μv (A-weighting)

Frequency Response

20Hz-20kHz (±0.06dB)

RCA Output (UAC)

Rated Power Output

≥2Vrms

SNR

124dB (A-weighting)

THD+N

0.0005% (A-weighting)

Dynamic Range

124dB

Noise Floor

≤3μv (A-weighting)

Frequency Response

20Hz-20kHz (±0.06dB)

What’s in the Box?
What’s in the Box?

Hardware-Level 7.1 
That Rebuilds the Space

Spatial processing rebuilds direction and distance cues for a wider, deeper scene, providing more presence in games and films.

AI Noise Reduction with Ultra-Low Latency

Filters out background noise like keyboard clicks, keeping your voice clean and clear with <50ms real-time processing.

Practical Controls for Clear Communication

Check the details

Web-Based Control Panel

Switch between presets or fine-tune your sound with PEQ controls, all through a clean, browser-based interface, no software required.