FiiO FT1 Pro Open-Back Planar Headphones

FT1 Pro Open-Back Planar Headphones

95x86mm FIIO-developed planar driver | 1μm thin diaphragm
Sapphire+Aluminum dual-coating technology | Patented uniform magnetic field design 
28nm-grade process technology | 20Ω high-sensitivity design
Open-backed design | 374g light weight 
12-level adjustable lightweight portable headband

FIIO-developed core, PRO sound 95x86mm FIIO-developed planar driver

The FP3 is equipped with FIIO's second generation, self-developed planar driver technology. The planar driver has been designed from the ground-up by FIIO, from the diaphragm, to the patented dual-coating, to the conductive trace width, to the fine-tuning of the magnetic circuit, and even the standardized bracket fixings - all to ensure a true quality driver.

· Compared to typical off-the-shelf drivers, the self-developed driver can be completely customized to build and fit around it a sophisticated acoustic system - allowing it to be both light weight and capable of great sound quality.

· While it weighs only 374g, the FT1 Pro packs a capable 95x86mm driver with specs rivaling that of flagship planar headphones.

· Thanks to this intensive research and development, the FT1 Pro features a large, almost limitless soundstage rarely found among its peers. It also effortlessly produces sound up to 40kHz.

Top-class planar driver 1μm thin diaphragm

Engineers have constantly strived to achieve thinner and lighter diaphragms for planar drivers. After two years of independent research and development, we have created for the FT1 Pro a class-leading 1μm ultra-thin diaphragm, using high-performance PET as the substrate. The difference between even a 2μm and a 1μm diaphragm thickness results in noticeable performance differences when the diaphragm is vibrating at high speeds, which ultimately affects sound quality. The FT1 Pro's 1μm ultra-thin diaphragm is exceptionally lightweight, allowing it to respond with lightning-quick speed. It faithfully reproduces even subtle sounds in the ultra-high frequency range, as well as providing exceptional dynamic range.

Brilliantly luxurious, dual-layered Sapphire+ Aluminum dual-coating patented technology

"Each material has its own natural frequency and timbre. Pairing different materials each with their own properties to vibrate with each other leads to a rich variety of sonic experiences. That's where the joy of HiFi truly lies - exploring the colorful and vast possibilities within audio." --Joseph, Chief Engineer of FiiO IEMs R&D Center

The FIIO FT1 Pro employs a newly self-developed technology for its planar driver - a patented dual-coating system. The planar driver uses high-performance PET as the diaphragm substrate and selectively applies sapphire and aluminum to create a dual-coated driver. Such a design enhances the driver's frequency response across different frequency ranges, improves audio resolution, and allows listeners to fully appreciate the nuanced and unique sound quality of planar drivers. The first coating layer is made of aluminum. Lightweight and conducive, the aluminum coating enhances the traces' conductivity, helping to reduce the driver's impedance and power requirements as well as improve its dynamics. The second coating layer is made of sapphire. With its high hardness, the sapphire coating contributes to the diaphragm's rigidity and enhances treble resolution and overall transparency, and helps the driver to exhibit a unique sound as a bonus.

Balanced distribution, uniform force Patented uniform magnetic field design

The FT1 Pro is equipped with FIIO's new patented acoustic technology-the uniform magnetic field design, which optimizes the uneven magnetic field intensity caused by adjacent magnets and further expands the magnetic field range. This technology makes the FT1 Pro's magnetic field more extensive, precise, and balanced, allowing the planar driver diaphragm in that magnetic field to be more evenly stressed. That is, the FT1 Pro planar driver diaphragm moves more evenly with reduced breakup and distortion - leading to a more refined sound that accurately captures even the subtlest of nuances in the music, which is characteristic of high-quality planar drivers.

Typical magnetic field design

As seen in the finite element simulation diagram, with conventional designs the magnetic field is uneven, with some areas particularly strong and others weak. This leads to uneven forces acting on the coils within the magnetic field, which increases the chance of breakup in the diaphragm and thus distortion, which degrades sound quality.

FIIO uniform magnetic field design

FIIO's uniform magnetic field magnet design incorporates rounded corners on the sides of the magnets, which expand the magnetic field. The result is a more evenly distributed magnetic field, and thus the planar diaphragm is more evenly stressed. What you hear is a more refined tone.

Advanced technology for advanced sound 28nm-grade process technology

In order to achieve high sound quality with the intricate second generation self-developed planar driver, the driver needs to be manufactured with precision at the nanometer level. Traditional diaphragm coating processes are not precise enough. To have its driver diaphragm manufactured with sufficiently high quality, the FIIO FP3/FT1 Pro's driver is made using a 28nm-grade process. This technique, inspired by coating technology used within the semiconductor industry, completely isolates the conductive traces material from the surrounding air. The traces material exists in a vacuum state at a pressure of 6.6 × 10⁻³ pascals, and the temperature is raised to 120°C. The traces material is transformed into ionized particles, which then accumulate on an ultra-thin 1 μm film through charge attraction principles. This process creates the desired coating thickness for optimal acoustics and significantly enhances the durability and lifespan of the traces*. Additionally, the FP3/FT1 Pro goes beyond industry standards by applying this complex and rigorous process twice to each diaphragm, resulting in a dual-coated membrane design that delivers exceptional sound quality.

*The FIIO FT5 uses the same manufacturing process and its driver's traces have undergone over six months of aging tests in FIIO Labs. During this testing period, there have been no occurrences of detachment, separation, or wire breakage in general. Sound quality still remains within standards. This durability experiment is still ongoing.

Ultra-thin diaphragm 1μm
Grade process 28nm
Temperature is raised to 120°C

Easy to drive
20Ω high-sensitivity design

The lightweight FT1 Pro aims to bring great planar sound without requiring serious amplification. The low 20Ω impedance combined with the high sensitivity of 112dB / Vrms@1kHz (or 95dB / mW@1kHz) means you can easily get great sound from the FT1 Pro.

High Sensitivity
112dB/Vrms@1kHz
95dB/mW@1kHz

7Hz-40kHz frequency response
Wide response range, hear every last detail

The FIIO FT1 Pro is capable of a wide frequency response range from 7Hz-40kHz, allowing you to truly experience even the subtlest of nuanced sounds the planar driver is capable of producing.

Lightweight Body, robust yet practical 374g light weight

While the FT1 Pro features a large, double-sided magnet planar driver, it only weighs about 374g - making it light, comfortable, and easy to carry around.

Steel slide rail, luxurious feel
Lightweight portable headband

To make it more portable and lightweight, the FT1 Pro headband features high-quality steel slides, significantly enhancing the headband's durability. You will feel the precision and sophistication of the mechanical design every time you adjust the headband. Additionally, compared to similar products, the FT1 Pro offers an extended adjustment range from 0 to 11 notches to accommodate various head sizes. The part of the headband in contact with the head is made of suede for a soft and comfortable wearing experience.

*This design uses a stamped scale on the steel rails with an adjustment range of 0-11 for a total of 12 levels.

12 levels of adjustment

ball bearing slide rail headband design

Suede fabric material, comfortable and breathable

Sound moves according to you 3-axis adaptive headband

The FT1 Pro inherits the excellent ergonomic design of the FIIO FT series. The 3-axis adaptive headband allows for free rotation at multiple angles. This design accommodates various head sizes and ensures a snug fit on the head for enhanced comfort and minimal sound leakage.

Refreshingly airy
Breathable fabric earpads

Experience comfortable long listening sessions and say goodbye to stuffiness. The FT1 Pro comes with breathable fabric earpads, featuring a textile material in contact with your skin. The high-density breathable mesh design efficiently dissipates heat buildup between the ear cushions and your ears. The side of the ear cushions is made of protein leather that both looks and feels good.

Affordable practicality
Headphone storage bag included

Included with the FIIO FT1 Pro is a stylish headphone storage bag made with the same techniques and materials as high-end French brands, rarely seen in its class but undoubtedly useful for protection.

Dual TS headphone connectors
Full of sincerity 2 silver-plated oxygen-free copper cables included

The FIIO FT1 Pro adopts the commonly used dual 3.5mm TS headphone connectors, allowing you to easily change and upgrade to another headphone cable.

The FIIO FT1 Pro comes with two headphone cables - terminated in 3.5mm single-ended and 4.4mm balanced plugs. Both cables are identically made using an oxygen-free copper-plated silver wire base with 392 wires, are of 24AWG thickness, and are 1.5 meters long. This makes the FT1 Pro widely compatible with many audio devices, as you can easily switch between the cables. They produce a transparent yet robust sound, allowing you to fully enjoy quality lossless audio.

Hi-Res Audio certified

The FT1 Pro has been certified by the Japan Audio Society (JAS) and by the Consumer Electronics Association (CEA) to be Hi-Res Audio capable. This is a testament to the headphones' abilities to faithfully and accurately reproduce audio as it was meant to be heard.

Packing list

1. Headphones*1
2. Storage bag*1
3. packaging box*1
4. 4.4mm balanced cable*1
5. 3.5mm single-ended cable*1
6. 3.5mm to 6.35mm adapter*1
7. Quick start guide*1