Fosi Audio i5 Open Back Planar Magnetic Headphones with 97mm Large Drivers and Hi-Res Audio
The Fosi Audio i5 represents a significant leap in affordable high-end personal audio, featuring massive 100mm planar magnetic drivers that deliver an expansive and detailed soundstage. Unlike traditional dynamic drivers, the i5 utilizes an ultra-thin 1.5-micron diaphragm with a silver-plated circuit to ensure lightning-fast transient response and exceptionally low distortion. The open-back design allows the music to breathe, providing a natural, airy presentation that is perfect for critical listening and long-form immersion.
Crafted for both durability and comfort, the i5 features a lightweight aluminum alloy frame and a self-adjusting suspension headband that distributes weight evenly across your head. The hybrid ear pads, made from premium protein leather and soft velvet, provide a superior seal while remaining breathable for extended sessions. With a low impedance of 32 ohms, these headphones are remarkably easy to drive, allowing you to experience high-fidelity sound directly from your smartphone, laptop, or a dedicated headphone amplifier.
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Features:
- High-Precision 97mm Planar Drivers: Provides an expansive surface area for superior soundstage depth and powerful low-frequency reproduction.
- Nanometer-Scale 1.5 Micron Diaphragm: Offers incredibly low mass and high speed to capture the fastest musical transients without distortion.
- Acoustically Transparent Open-Back Design: Minimizes internal reflections to create a natural, lifelike audio presentation that mimics high-end speakers.
- Self-Adjusting Suspension Headband: Automatically adapts to the shape of your head to distribute weight evenly for pressure-free comfort.
- Lightweight Aviation-Grade Aluminum Frame: Combines high structural rigidity with a low-profile weight to enhance durability without adding bulk.
- Easy-to-Drive 32-Ohm Impedance: Makes high-fidelity sound accessible across a wide range of devices including smartphones and laptops.
- High-Purity Oxygen-Free Copper Cable: Ensures a clean signal path from your source to the drivers with minimal interference or signal loss.
- Premium Hybrid Ear Pads: Features a blend of soft velvet and protein leather to provide a breathable yet secure fit for long-term wear.
- Standard Dual 3.5mm Connection: Allows for effortless cable upgrades and ensures compatibility with a vast array of aftermarket balanced cables.
Specifications:
- Driver Technology: Planar Magnetic
- Driver Diameter: 97mm
- Acoustic Principle: Open-Back
- Frequency Response Range: 10Hz to 50kHz
- Sensitivity: 96dB / mW
- Impedance: 32 Ohms
- Diaphragm Thickness: 1.5 Microns
- Total Harmonic Distortion: Less than 0.2 percent
- Frame Material: Aluminum Alloy
- Cable Length: 2.0 Meters
- Connector Type: Dual 3.5mm (Headphone Side)
- Termination: 3.5mm Gold-Plated (Source Side)
- Headphone Weight: Approximately 420g
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