Fosi Audio i5 Open-Back Planar Magnetic Headphones

Feature

Immersive Listening, Pure Original Sound

Experience high-fidelity sound with nano-thin diaphragm and symmetrical magnets. Precision acoustics deliver high-resolution, low-distortion sound for live-performance realism

97mm Ultra-Large Diaphragm

97mm Nano-Level driver at 2μm thickness reveals microscopic details. Sputtered silver alloy coating enhances clarity while ensuring long-term sonic consistency and durability

Ergonomic Design, Long-Lasting Comfort

Memory metal headband with multi-axis pivoting earcups adapts instantly. Silicone sliders enable micro-adjustments. Breathable skin-friendly earpads eliminate fatigue during extended sessions

Refined Craftsmanship

Handcrafted walnut wood chambers paired with CNC-milled aluminum frame. Genuine sheepskin headband and signature S-design accents exude understated luxury and timeless sophistication

Precision Magnetic Control

44 N50 neodymium magnets ensure fast transient response. Acoustically transparent open-back grille minimizes resonance for expansive, holographic soundstage with studio-grade accuracy

Model Name： i5
Device Type ：Full-size Open-back Wired Headphones
Transducer Type ：Planar Magnetic Drivers
Maximum Sound Pressure Level ：>120 dB SPL
Frequency Response ：10Hz - 50kHz
THD ：< 1% @ 100 dB SPL
Sensitivity ：98dB/mW @ 1kHz
Impedance ：28Ω
Recommended Power ：> 250mW
Minimum Recommended Power： > 100mW
Weight 550g