FiiO FT5 Open-Back Planar Headphones Demo – 90mm Driver

The FiiO FT5 is an open-back planar magnetic headphone built for listeners who prioritize musical engagement and all-day comfort over raw technical detail. Its 90mm planar driver uses a 6μm thin-film diaphragm with a micron-plated aluminum-silver alloy coil processed via 28nm chip-scale technology, distributing vibration evenly across the diaphragm surface to reduce distortion from material rigidity. Twenty N52 neodymium magnets (11 inner, 9 outer) create a balanced magnetic field that keeps the driver moving consistently for higher-fidelity reproduction.

The full magnesium-aluminum alloy chassis — earcups, grills, headband, and yokes — is vibration-resistant and free of plastic. Turbine-inspired sound tubes on the grille control and accelerate airflow for improved soundstaging and treble resolution. At 36Ω and 96dB/mW sensitivity, the FT5 delivers strong output from portable sources without a desktop amplifier.

Headphonesty reviewers praise the FT5's outstanding build quality, exceptional comfort, and a warm, smooth, sibilance-free sound that suits extended listening. Headfonia notes the premium all-metal construction and accessory kit as standout value at this price point.

Demo unit; may show light signs of handling. Contact us for photos and details.

Specifications