Fosi Audio

Fosi Audio is a consumer-focused audio engineering company founded in 2017 and based in Shenzhen, China. Specializing in compact, high-performance amplifiers, DACs, headphone amps, preamps, and related accessories, Fosi has built a global reputation for delivering sound quality that exceeds expectations at each price point.

The company’s approach centers on bringing high-fidelity audio to a wider audience—enthusiasts, beginners, and everyday listeners alike—through well-engineered products that combine clarity, simplicity, and lasting value.

Engineering That Prioritizes the Listener

Fosi Audio products are developed in-house by a team of engineers with deep experience in analog and digital circuitry. They focus on core principles: clean signal paths, reliable components, and low noise design. From Class D amplifier modules to discrete headphone amps and phono stages, every circuit is designed with the end listener in mind.

Careful attention is paid to heat dissipation, efficiency, and protection circuits, allowing compact enclosures to deliver performance typically found in much larger and more expensive components.

Designed for Real-World Use

All Fosi Audio gear is built to fit seamlessly into real-life listening environments. Compact chassis designs make integration easy—whether on a desktop, bookshelf, or media console—while offering the power and control needed to drive full-sized speakers or audiophile headphones.

Controls are intuitive, features are practical, and designs are minimal, with an emphasis on user experience rather than marketing frills. Many models offer Bluetooth connectivity, subwoofer outputs, USB DAC functions, and multiple input options—bridging the gap between analog tradition and modern convenience.

Global Reach, Local Support

Fosi Audio serves over 100 countries, with fulfillment centers across North America, Europe, and Asia. Every unit is backed by a 24-month warranty and responsive customer support, with direct contact options available through their website and social channels. The company maintains an open feedback loop with its community to inform product development and firmware updates.

From DIY Roots to Full Systems

Originally known for DIY amplifier boards and starter kits, Fosi Audio has grown into a full-fledged hi-fi brand. The company now offers complete audio solutions—from all-in-one integrated amplifiers to modular component systems—and continues to serve the DIY community through accessible gear and upgrade-friendly platforms.

Their design philosophy still reflects those early values: transparency, hands-on learning, and getting the most out of every component.

A Different Kind of Hi-Fi Company

Fosi Audio represents a shift in how high-quality sound is delivered and experienced. Instead of inflating prices to meet luxury positioning, the company invests in function-first design, global logistics, and direct-to-consumer relationships. This lean, engineering-forward model enables faster development cycles, better pricing, and more transparency with customers.

By avoiding the legacy-markup model of traditional hi-fi brands, Fosi makes audio gear that more people can enjoy without compromise.

From a 10m² Office to a Global HiFi Powerhouse: The Story of Fosi Audio