Fosi Audio i5
Best planar magnetic headphones for audiophiles seeking a dynamic, immersive soundstage.
These planar magnetic headphones trade the clinical, flat profile of traditional studio gear for a punchy, V-shaped sound that makes music feel alive. The massive drivers and open-back design create a sprawling, natural soundstage, though you will need a quiet room to fully appreciate the detail.
$549.99
at
Audio46
Who it's for
- Audiophiles needing flexible connections for multiple digital devices
- Desktop users seeking powerful sound from a space-saving unit
- Budget-conscious listeners wanting high-end features at an accessible price
Who should skip it
- Purists seeking the warmth and depth of analog amplification
- Users who prefer intuitive controls and a modern interface
- Buyers prioritizing long-term durability and premium brand reliability
Performance breakdown
Soundstage Depth
Open-back architecture creates an expansive, airy sense of musical space.
Transient Response
Massive planar drivers deliver lightning-fast, precise audio transients.
Build Integrity
Walnut and aluminum construction offers a premium, durable aesthetic.
Long-term Comfort
Suede padding feels luxurious, though the 550g weight is noticeable.
Frequency Extension
Wide 10Hz to 50kHz range captures deep lows and shimmering highs.
Driveability
Requires a dedicated amplifier to truly unlock the driver potential.
Key Specs
Device Type
Open-Back Wired Headphones
Transducer Type
Planar Magnetic Drivers
Driver Size
97mm
Frequency Response
10Hz - 50kHz
Nominal Impedance
28Ω
Sensitivity
98dB/mW @ 1kHz
Weight
550g
Recommended Power
≥ 500mW
Construction Materials
Walnut Wood, Aluminum Frame, Suede Leather
Earcup Material
Leather
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