Fosi Audio i5 Open-Back Planar Magnetic Headphones

HiFi Headphones for Passionate Audiophiles

Key Features

• 97mm Diaphragm
• Walnut Wood
• Magnetic Array
• Aluminum Frame
• Sputtered Coating
• Detachable Cables
• Genuine Suede

Immersive Listening Pure Original Sound

Crafted with an ultra-thin diaphragm using nano-level technology, an invisible high-powered magnetic system, and precision acoustic design, the i5 delivers high resolution and low distortion for a truly lifelike listening experience.

97mm Ultra-Large Diaphragm

The ultra-thin diaphragm, crafted with nano-level precision, delivers faster response, enhanced detail, and a more natural, clear, and layered sound.

Sputtered Coating Technology

Utilizing advanced targeted sputtering technology, a highly conductive silver metal voice coil as thin as 1.3μm is precisely coated onto the diaphragm. This process significantly enhances sound refinement while ensuring durability, keeping excellent audio performance consistently stable over time.

Symmetrically Arranged High-Strength Magnetic Matrix

Each driver unit features 22 pieces of N50-grade neodymium magnets arranged symmetrically, ensuring precise and stable diaphragm vibration. This design enables accurate and swift dynamic response, effectively reducing nonlinear distortion to produce purer, more natural sound, faithfully reproducing the essence of music.

Rigid High-Transparency Acoustic Mesh

The high-transparency rigid rear mesh structure provides stable air pressure damping and linear feedback. It smooths out frequency spikes and reduces nonlinearity, achieving an open, airy soundstage with ultra-low acoustic resistance.

Ergonomic Design Long-Lasting Comfort

Designed to follow the natural contours of the head, the i5 ensures a secure yet gentle fit. Even during extended listening sessions, it remains comfortable and pressure-free, letting you enjoy your music without distraction.

Dual-Axis Ear Cup Arms

Allows seamless vertical and horizontal rotation for a custom fit to different head shapes, enhancing both comfort and stability.

Stepless Silicone Adjustment

The headband features a silicone adjustment slider with a damped, smooth feel, enabling easy and precise positioning based on personal preference.

Durable Memory Metal Headband

Made of high-strength memory metal, the headband maintains its shape over time. Lightweight and flexible, it reduces pressure and enhances comfort.

Breathable Skin-Friendly Earpads

Crafted with perforated leather and breathable fabric, the earpads stay cool and soft. Memory foam inside ensures all-day comfort without overheating.

Refined Craftsmanship, Where Aesthetics Meet Quality

A refined fusion of premium materials and elegant design, delivering a look that exudes sophistication, texture, and distinctive character.

Genuine Suede Leather Headband

Soft and refined for a more comfortable fi

Luxurious Walnut Wood Frame

Each pair features a unique natural grain.

CNC-Machined Aluminum Frame

Lightweight yet sturdy with a metallic finish

S-Shaped Decorative Accent

Elegant and flowing, inspired by musical notes

Detachable Cable Design

The i5 features a detachable cable design with standard 3.5mm connectors on both sides, and is compatible with our available 3.5mm and 4.4mm headphone cables.

What‘s in the box？

• i5 Headphone
• 6.35mm Adaptor
• 3.5mm Cable
• User Manual

Specification