Fosi Audio has entered the esports market with the C3 Gaming Sound Card, featuring their proprietary StepSense technology. This innovation specifically enhances critical footstep frequencies in FPS games without overpowering other game audio. Unlike traditional EQ-based solutions, StepSense selectively enhances positional cues while preserving the overall game mix, reducing listening fatigue for competitive players.

The C3 delivers hardware-level 7.1 spatial audio processing with latency as low as 40 milliseconds. Its compact aluminum chassis includes tactile buttons, dedicated sliders, and an ergonomic five-degree angled design. Connectivity options span USB-C, optical, coaxial, RCA line out, and 3.5 mm connections, making it compatible across PC, PS5, Nintendo Switch, gaming headsets, and active speakers.

For communication needs, the C3 offers noise cancellation for voice chat, independent microphone volume controls, real-time sidetone monitoring, and one-touch muting. The web-based control interface provides game-specific sound presets and customizable EQ profiles. Fosi also offers the K7 Balanced Hi-fi Gaming DAC/Headphone Amplifier as a higher-end alternative for users seeking a more traditional Hi-fi gaming desktop setup.