The newly announced FiiO FT15 headphones bring large planar magnetic drivers and wood craftsmanship to audio enthusiasts for $499. Designed as an over-ear open-back model, the release follows the brand’s earlier planar models by introducing refined materials and updated acoustic engineering.
Audio hardware continues to expand across personal audio markets, with listeners connecting specialized gear to their everyday mobile devices and desktop audio workstations.
Acoustic Design and Diaphragm Construction
At the center of the unit sits an ultra-thin 800nm diaphragm, which is 86.7 percent thinner than the prior generation. FiiO applies a proprietary full-face diamond coating directly across the surface to increase stiffness while maintaining low moving mass. Consequently, the diaphragm can react rapidly to signals, producing accurate sound reproduction across frequencies.
The planar driver measures 101mm in diameter with an effective radiating area of 6,443.5 square millimeters. Furthermore, the company engineered a patented uniform magnetic field using custom high-strength magnets. This arrangement helps control surface motion and suppress diaphragm distortion during playback.

Voice Coil Technology and Connectivity
The engineering team incorporated a precision electroplated voice coil built using 28nm chip-grade technology. This construction stays structurally stable during rapid vibration, supporting long-term hardware durability across extended listening sessions.
In terms of electrical specifications, the FiiO FT15 headphones feature an impedance of 24 ohms and a sensitivity rating of 95dB/mW. Because of these efficient specifications, the unit pairs easily with portable USB DAC dongles like the FiiO QX13 as well as desktop units like the K19 DAC amplifier.
Build Quality, Materials, and Accessories
The earcups are manufactured from North American FAS-grade black walnut wood, providing an individual grain pattern on every set. To reduce overall weight to 425 grams, the headband uses lightweight carbon fibre materials.
Additionally, the retail package features a cryogenically treated 6N monocrystalline copper cable. It includes a 4.4mm balanced termination along with 6.35mm and XLR-4 adapters to fit varied home gaming and hi-fi audio systems.
Market Availability of the FiiO FT15 Headphones
The manufacturer confirmed that the product is available immediately through authorized audio distribution channels. The retail price is set at $499.99 in the United States, £499 in the United Kingdom, and €499.99 across European markets. The package also includes two pairs of interchangeable earpads and a protective storage case for everyday transport among modern smart devices.