FiiO JT7 – Open-Back Planar Magnetic Headphones Designed for Audiophile-Grade Listening The FiiO JT7 are open-back planar magnetic over-ear headphones engineered to bring planar performance to a wider audience, combining a large 95×86mm planar magnetic driver, ultra-thin 3-micron diaphragm and Hi-Res certified frequency response for an expansive soundstage and analytical sound delivery. Designed from the ground up and manufactured entirely in-house by FiiO, the JT7 implement a dual-sided magnetic circuit and heterogeneous high-density magnets that generate exceptionally strong magnetic field force, allowing the diaphragm to move with speed, precision and minimal distortion. The result is crisp treble, energetic mids and controlled bass, with the open-back architecture creating a natural, airy and spacious presentation that feels closer to a live performance. The headphones feature FiiO’s proprietary F.E.S. (FiiO Elastic System), a multi-dimensional diaphragm texture developed to enhance elasticity, reduce internal stress and boost movement amplitude. This innovation allows the JT7 to deliver fuller bass and greater presence compared to conventional planar headphones. Every aspect of the precision-built driver is constructed using a 28nm chip-grade manufacturing process, ensuring coil integrity, seamless integration and long-term structural stability. Comfort and usability are at the forefront of the JT7. Crafted with a lightweight build of only 318 grams, they are significantly lighter than many planar alternatives above 400 g, making them ideal for extended listening sessions at home, work or on-the-go. The ergonomic headband features four-axis rotational flexibility with folding, pitch and horizontal rotation plus a 38 mm sliding adjustment, ensuring a precise fit tailored to any head shape. Replaceable earpads and a detachable cushioned headband provide breathable skin comfort, while extending product longevity for long-term daily use. The detachable cable system allows the FiiO JT7 to adapt to different audio sources. Included in the box are a 3.5 mm single-ended headphone cable, a 4.4 mm balanced cable, and a 6.3 mm adapter for use with amplifiers and professional equipment. Dual 3.5 mm TRS connectors ensure compatibility with portable DACs, desktop amps, laptops and audio players. With a 7 Hz – 40 kHz frequency range and Hi-Res Audio certification, the JT7 confidently meet professional listening standards, while remaining accessible, foldable, and easy to carry. The FiiO JT7 are ideal for listeners seeking reference-grade planar magnetic performance without sacrificing comfort, weight or usability, transforming audiophile listening into a practical everyday experience.
