Fosi Audio Launches C3 Gaming Sound Card Featuring StepSense™ Footstep Radar for Competitive Play

Sharper footstep cues for FPS games, immersive spatial positioning, and cleaner voice communication in one desktop gaming solution

05/28/2026

Shenzhen, May 28, 2026– Fosi Audio has announced the launch of the new C3 Gaming Sound Card, the first card in the company’s esports lineup. Now available on various shopping platforms, the C3 combines StepSense™ gaming audio, HiFi-grade circuitry, and intuitive desktop controls to help competitive players hear more, react faster, and communicate more clearly during gameplay.

StepSense™ Audio Enhancement for Competitive FPS Gaming

Developed specifically for FPS gamers, the C3 uses Fosi Audio’s proprietary StepSense™ positional audio enhancement technology to analyze in-game audio in real time and intelligently enhance critical footstep frequencies without overpowering explosions, gunfire, or environmental effects. Unlike traditional EQ-based gaming sound cards that boost entire frequency ranges indiscriminately, the StepSense™ technology selectively enhances key positional audio cues while preserving the overall game mix for improved situational awareness and reduced listening fatigue.

StepSense™ technology has been developed using extensive gameplay analysis across competitive titles including Counter-Strike 2 and PUBG: Battlegrounds, enabling the system to isolate and enhance subtle movement cues such as footsteps, grass movement, vaulting, and environmental detail with processing latency as low as 40 milliseconds.

The C3 also features hardware-level 7.1 spatial audio processing, designed to create a more immersive and accurate 360-degree soundstage for games supporting multichannel audio output. Unlike software-based virtual surround solutions, the C3 reconstructs multichannel signals using human auditory modeling algorithms to improve stereo spatial imaging and positional accuracy in competitive environments.

Built for Communication, Streaming, and Everyday Gaming

To support team communication and streaming workflows, the C3 includes noise cancellation for voice chat, independent microphone volume controls, real-time sidetone monitoring, and one-touch microphone muting. The web-based control interface also provides game-specific sound presets for titles such as CS2 and PUBG alongside customizable EQ profiles and community profile sharing.

Built for desktop gaming setups, the compact aluminum alloy chassis features tactile buttons, dedicated sliders, and a five-degree angled ergonomic design for intuitive no-look adjustments during gameplay. Connectivity includes USB-C, optical, coaxial, RCA line out, and 3.5mm microphone and headphone connections with compatibility across PC, PS5, Nintendo Switch, gaming headsets, and active speakers.

K7: A Flagship Desktop Audio Hub for Gaming, Music, and Everyday Listening

For users who split their time between gaming, music, movies, and everyday desktop use, the K7 Balanced HiFi Gaming DAC/Headphone Amplifier is designed as a central audio hub that brings higher fidelity sound, greater flexibility, and more powerful headphone performance to a wide range of listening scenarios.

Whether tracking subtle details in games, enjoying lossless music, or watching late-night movies at the desk, the K7 combines fully balanced circuitry, powerful amplification, and customizable sound controls to deliver a more immersive and refined listening experience.

Additional features include plug-and-play compatibility with PS5 and Nintendo Switch, microphone input with noise reduction, tactile desktop controls, and an integrated LCD display for real-time settings visibility.

Whether users prioritize competitive FPS performance or a more traditional HiFi listening experience, Fosi Audio offers different gaming audio solutions tailored to different needs.

Compare the C3 and K7 side by side here: https://fosiaudio.com/collections/game-audio.

“We wanted to build a gaming audio platform that combines competitive performance, StepSense™ audio enhancement technology, and true HiFi sound quality,” said Ryan Huang, Founder and CEO of Fosi Audio. “The C3 is designed for players who rely on precise audio positioning and immersive sound, while products like the K7 provide additional options for users who want a more traditional HiFi gaming desktop setup.”

For more information about Fosi Audio and upcoming product launches, please visit: fosiaudio.com

About Fosi Audio

Fosi Audio is a global hi-fi audio technology company founded in 2017 in Shenzhen by audiophile-engineer Ryan Huang, now serving customers in over 150 countries. Fosi believes high-fidelity sound should be accessible to everyone, not just a privilege of the few. Their mission is to redefine HiFi with unmatched value, combining user-driven design, engineering excellence, and competitive pricing.