FiiO FT5  - 90mm Open Planar Magnetic Headphones 

FiiO FT5 Planar

FiiO FT5 – 90mm Open-Back Planar Headphones

FiiO FT5 Review

The all-new FT5 is FiiO’s first planar magnetic headphones. Planar magnetic drivers are in between dynamic and electrostatic headphones. Like dynamic headphones, there is a sort of coil on the planar driver. Similar to electrostatic headphones, the diaphragm is a special kind of thin, micron-level film. The FT5 is 28nm chip-scale processed, leading to an approximately 6μm thick diaphragm. These characteristics of the planar driver make it possible to create a headphone that is not only highly detailed but also easy to power.
FiiO FT5  - 90mm Open Planar Magnetic Headphones 
The FiiO FT5 employs an outstanding large 90mm planar magnetic driver. Compared to a traditional dynamic driver, a planar magnetic driver converts sound energy to sound waves in a more balanced way, by vibrating in a much more even way.
FiiO FT5 - 90mm Open Planar Magnetic Headphones
The vibrations are distributed across the entire driver diaphragm and there is little distortion caused by the rigidity of the diaphragm material. Thus, the FiiO FT5 can truly and accurately express audio signals.
FiiO FT5  - 90mm Open Planar Magnetic Headphones 
During the development of the FT5, the R&D engineers not only needed to consider how the coils would interact with the 6μm thin diaphragm but also the density and conductivity of the coils themselves. Having examined and tested various commonly used materials* to plate planar coils, FiiO engineers determined that the lighter aluminum alloy material was best for the coils. Also, they determined that mixing in silver metal would enhance the conductivity of the coils, making the driver easier to power without sacrificing the high-frequency detail and rich sound characteristic of good planar magnetic drivers.
FiiO FT5  - 90mm Open Planar Magnetic Headphones 
The FT5’s driver is both light and strong, allowing for a high sensitivity of 110dB/1Vrms@1kHz i.e. 96dB/mW@1kHz. This allows the FT5 to be easily driven even by portable players.
FiiO FT5  - 90mm Open Planar Magnetic Headphones 
The FT5 comes with a 1.5m cable made of 392 wires of silver-plated monocrystalline copper, each wire with a diameter of 23AWG. The copper wires help to give a solid and highly detailed sound.
FiiO FT5  - 90mm Open Planar Magnetic Headphones 
  • 3.5mm/4.4mm interchangeable plugs
  • 6.35mm male to 3.5mm female adapter
  • XLR-4 male to 4.4mm female balanced adapter
  • Suede earpads
  • Protein leather earpads
  • Leather storage case

FiiO FT5 90mm Open Planar Magnetic Headphones


  • FiiO’s First Planar Magnetic Driver Headphones.
  • 90mm Large-Sized Planar Magnetic Driver.
  • 6um Ultra-Thin Diaphragm.
  • Micron-Plated Aluminum-Silver Alloy Coil.
  • Lightweight Magnesium Aluminum Alloy Construction.
  • Open-Back Design.
  • Strong Magnetic Flux with 20 neodymium Magnets on each side.
  • High-purity monocrystalline Copper Cable.
  • High-sensitivity, Easy To Drive.
  • Exquisite & Comfortable.
  • Professionally Adjusted Tuning.
  • Two Types of Earpads are included.
  • Four types of Termination Plugs.


  • Impedance: 36Ω.
  • Sensitivity: 110dB/Vrms.
  • Frequency Response: 7Hz-40kHz.
  • Maximum Power Input: 2000mW.
  • Weight: Approxs 456 grams (excluding cable).
Price: $449.99

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