FiiO JT7 Open-Back Planar HiFi Headphones
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The FiiO JT7 headphones represent the pinnacle of open-back planar headphones: a perfect blend of advanced audio technology and ergonomic comfort. Immerse yourself in a wide, natural soundstage thanks to the proprietary 95 x 86 mm planar driver, featuring an ultra-thin 3 µm diaphragm. This combination ensures exceptional sound reproduction: deep, controlled bass, warm, natural mids, and crystal-clear, detailed highs free of sibilance.
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F.E.S. (Floating Elastic System) technology and the high-density, heterogeneous double-sheath magnet system ensure a precise frequency response and astonishing dynamics, preserving transparency and fidelity even in the most complex passages. The open-back design enhances the soundstage, lending three-dimensionality and depth to recordings, ideal for hi-fi listening, professional mixing, or mastering.
Despite their technical complexity, the FiiO JT7 remain lightweight and extremely comfortable to wear: thanks to their foldable design and ergonomic headband, they are perfect for extended listening sessions without fatigue. The earcups and headband cushion are interchangeable, allowing for maintenance and customization over time. Both a 3.5 mm and 4.4 mm balanced cable are included, ensuring compatibility and maximum sound quality with any source.
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In-house developed technology for superior acoustic performance
The FiiO JT7 feature a proprietary 95 x 86 mm planar driver designed entirely in-house: from diaphragm research to the creation of the voice coil and magnetic circuit. This complete control of the production process guarantees consistent, precise, and premium sound quality. The generous dimensions of the transducer deliver a wide, immersive soundstage, with powerful, punchy bass.
Unlike dynamic or balanced armature drivers, planar drivers use an electromagnetic force evenly distributed across the entire surface of the ultra-thin diaphragm. This avoids the partial deformations typical of conventional drivers, dramatically reducing distortion and improving transient response. The result is a clean, dynamic, and incredibly spatial sound—an ideal choice for those seeking a premium audio experience.
Maximum responsiveness for brilliant, clear highs
To achieve the speed of movement that distinguishes planar drivers, the diaphragm must be extremely thin. In the JT7, it measures just 3 µm, allowing for accurate reproduction of even the smallest variations in the electrical signal. This translates into excellent transient response and a clear, detailed, and nuanced high range, perfect for enthusiasts seeking precision and brilliance in the high frequencies.
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F.E.S. System (FiiO Elastic System)
The JT7 driver features the patented F.E.S. system, a unique multidimensional texture applied to the diaphragm that increases its elasticity, similar to the suspension of a dynamic driver. This solution allows for precise management of the diaphragm's internal tension, improving freedom of movement without introducing distortion. The result is richer, deeper, and more natural bass.
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Ultra-precise wiring and a more robust structure
The FiiO JT7 headphones use the same advanced manufacturing process as the FP3, FT1 Pro, and FT7. The methodology derives from high-precision plating techniques used in the semiconductor industry and allows the voice coil and diaphragm to be integrated into a single piece.
This approach allows for ultra-fine wiring and a more stable and durable internal structure, for consistent performance over time and greater reliability.
Powerful magnetic field for high sensitivity and easy control
The JT7's 92 dB/mW sensitivity is made possible by a pair of high-performance neodymium iron-boron magnets, capable of generating a strong and uniform magnetic field.
This magnetic force ensures a powerful response from the planar driver, enabling high volume and full-bodied sound even when connected to portable or less powerful sources.
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Superior portability, without compromising comfort
Weighing just 318 g, the FiiO JT7 break the mold of traditional planar headphones, which are often bulkier and heavier. The structure has been optimized for maximum comfort during extended listening sessions. The foldable design allows the earcups to rotate and easily fold the headphones, making them ideal for everyday use, travel, or space-saving storage at home.
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Precise fit for total comfort
The JT7's ergonomic headband offers four-axis rotation, ensuring a natural fit that adapts to the shape of your head and ears. This precision fit ensures optimal sound transmission and excellent comfort even after hours of listening.
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Highly Flexible Detachable Cable
The FiiO JT7 features an extremely flexible detachable cable system that ensures excellent compatibility with a wide variety of audio sources. The package includes a 3.5 mm single-ended cable, a 4.4 mm balanced cable, and a 6.35 mm to 3.5 mm adapter, all based on the model's signature dual 3.5 mm connector. This configuration allows the user to connect the headphones to digital players, portable DACs/amps, professional interfaces, and dedicated amplifiers, enhancing the different sound signatures offered by each type of connection.
Includes a 3.5 mm single-ended headphone cable
Includes a 4.4 mm balanced headphone cable
Recommended Devices for the FiiO JT7
Like all planar headphones, the FiiO JT7 require more drive power than dynamic models, while maintaining a low impedance of just 18 ohms, making them accessible to most modern portable devices. Many FiiO dongles and DACs/amps, such as the KA15, KA17, QX13, BTR17, M21, and DM13, are capable of delivering the necessary sound pressure via balanced output, especially when offering power outputs above 500 mW.
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High-Strength Glass Fiber Hinges
The FiiO JT7 headphones maintain the brand's typical high construction standards, incorporating hinges made of high-strength glass fiber, a material far superior to the common plastics used in the industry. This choice ensures greater structural rigidity, long-term stability, and superior durability even under intensive use. During development, the JT7 hinges are subjected to rigorous professional reliability tests to ensure consistent long-term performance. Each unit undergoes thousands of mechanical stress cycles, including expansion, torsion, oscillation, bending, and tensile tests, to ensure precision and robustness in every movement.
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Tests conducted on the FiiO JT7 hinges:
• Expansion test: over 10,000 cycles
• Torsion test: over 10,000 cycles
• Tensile load test: over 5 kg
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Package Contents
Headphones x 1
3.5 mm headphone cable x 1
4.4 mm headphone cable x 1
6.3 mm male to 3.5 mm female adapter x 1
Case x 1
Quick Start Guide x 1
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