Fosi Audio i5 Planar Headphone
Brand: Fosi Audio
₹76,700.00
The Fosi Audio i5 is a premium open-back planar magnetic headphone featuring a 97mm ultra-large nano-thin diaphragm and a 44-magnet N50 neodymium array. Designed for highly detailed, low-distortion listening, it combines expansive open-back acoustics with walnut wood chambers, CNC-machined aluminium construction and ergonomic materials for extended Hi-Fi and studio sessions.
i5
Fosi Audio i5 Planar Headphone
The Fosi Audio i5 is engineered for listeners seeking high-resolution planar magnetic performance with an expansive and accurate soundstage. Its 97mm diaphragm measures just 2μm thick and uses a magnetron-sputtered silver alloy coating to enhance clarity and consistency. A 44-magnet N50 neodymium array provides precise diaphragm control for fast transient response and low distortion. The open-back grille minimises unwanted resonance while creating a spacious presentation. Handcrafted walnut chambers, CNC-milled aluminium framing, a genuine sheepskin headband and breathable protein leather ear pads combine premium craftsmanship with long-session comfort.
i5
Details & Specifications
Driver & Acoustic Design
| Brand | Fosi Audio |
|---|---|
| Model | i5 |
| Product Type | Open-Back Planar Magnetic Headphone |
| Transducer Type | Planar Magnetic |
| Driver Diameter | 97mm |
| Diaphragm Thickness | 2μm |
| Diaphragm Coating | Magnetron-Sputtered Silver Alloy |
| Magnet Array | 44 × N50 Neodymium Magnets |
| Acoustic Design | Open-Back |
Audio Performance
| Frequency Response | 10Hz–50,000Hz |
|---|---|
| Maximum SPL | ≥120dB SPL |
| Sensitivity | 98dB/mW @ 1kHz |
| Nominal Impedance | 28Ω |
| THD | <1% @ 100dB SPL |
| Recommended Power | ≥500mW |
Construction & Materials
| Ear Cup Chambers | Handcrafted Walnut Wood |
|---|---|
| Frame | CNC-Milled Aluminium |
| Headband Material | Genuine Sheepskin |
| Headband Structure | Memory-Steel |
| Ear Pads | Breathable Protein Leather |
| Adjustment Mechanism | Silicone Sliders |
| Ear Cup Movement | Multi-Axis Pivoting |
Listening Design
| Soundstage Design | Expansive Open-Back Presentation |
|---|---|
| Magnetic Control | 44-Magnet Precision Array |
| Grille Design | Acoustically Transparent Open-Back Grille |
| Intended Performance | High-Resolution, Low-Distortion Listening |
| Recommended Use | Hi-Fi / Studio-Style Listening / Extended Listening Sessions |
Cable & Accessories
| Standard Cable | 4.4mm Cable |
|---|---|
| XLR Adapter | Supported / Available |
| Replacement Ear Pads | Supported / Available |
Key Features
| Nano Diaphragm | Yes |
|---|---|
| 97mm Planar Driver | Yes |
| Open-Back Design | Yes |
| Walnut Construction | Yes |
| Premium Metal Frame | Yes |
| Planar Magnetic Technology | Yes |
About Fosi Audio
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