* product drawings are for reference only, all in kind shall prevail

Second-generation self-developed 14.5mm in-ear planar driver| 1μm thin diaphragm Titanium + Aluminum dual-coating patented technology | 28 nm-grade process technology

Planar In-Ear Monitors

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Mini planar Mini wooden bowl

In Q3 of 2022, FIIO began research and development on “mini planar” IEMs. Unlike over-ear headphones with large planar drivers, creating a planar IEM posed unique challenges. The goal was to retain the characteristic high resolution and wide frequency response associated with planar drivers within the limited space of an IEM while also ensuring quality bass response and an overall full sound. This was not easy to achieve, and reaching these goals required breaking industry norms and taking an innovative approach.

After two years of meticulous work, we created the FiiO FP3, featuring a second-generation, entirely self-developed 14.5mm planar driver. The diaphragm thickness is merely 1μm, the thinnest among its peers, achieved in part thanks to FiiO’s new dual-coating patented technology. The driver was designed to deliver excellent sound quality and impressive dynamics. The FP3’s appearance draws inspiration from a “mini wooden bowl.” Prominent on the FP3 is pure wood faceplate, with options for rosewood or walnut finishes. Each earbud weighs only about 6.5g and features ergonomic enhancements for comfortable and worry-free wear.

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continue to understand

FT1 picture

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Natural sound

Rosewood/Black walnut versions available

The FIIO FP3 features a natural solid wood faceplate, with rosewood/black walnut versions available:

Rosewood

Rosewood grows in tropical regions and is commonly used in various applications, such as for high-end musical instruments and custom classical furniture. The wood itself boasts vivid colors and distinct grain patterns, making it a beautiful and elegant wood adored all over the world.

Black walnut

Originating from the high-latitude regions of North America, blacK walnut is renowned for its beautiful and elegant grain patterns, as well as its smooth and fine texture. It is used in luxury products such as yachts, high-end cars, and custom-made furniture. It is a relatively rare wood.

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Facing problems head-on, Breaking through them

2nd gen self-developed 14.5mm in-ear planar driver

The FP3 is equipped with FIIO’s second generation, self-developed 14.5mm in-ear planar driver. 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. 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 the driver to achieve significant breakthroughs in sound quality. Thanks to this intensive research and development, the FIIO FP3 features a large, almost limitless soundstage rarely found among its peers. It also effortlessly produces deep bass and detailed treble up to 40kHz, allowing you to fully dive into the music.

14.5mm

2nd gen self-developed 14.5mm in-ear planar driver

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two DAC chips ES9068AS process the left and right channels respectively, and refine the "core" polishing quality and sound quality. Listen to your favorite playlist and revel in the beautiful singing in an instant.

high-performance dual-core, sound into your heart

A true standout 1μm

ultra-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 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 FP3’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.

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The FIIO FP3 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 aluminum and titanium 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 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 IEM’s impedance and power requirements. The second coating layer is made of titanium. With its high hardness, the titanium coating contributes to the diaphragm’s rigidity and enhances treble resolution and overall transparency.

Dual-stacked, Finely-tuned frequency response

Titanium + 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.”

Chief Engineer of FiiO IEMs R&D Center

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In order to achieve high sound quality with the intricate second generation self-developed planar driver, the FP3’s driver needs to be manufactured with precision at the nanometer level. Traditional diaphragm coating processes are not precise enough. To have its driver diaphragm be manufactured with sufficiently high quality, the FIIO FP3’s driver is made using a 28 nm-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 exist 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 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.

Advanced technology for advanced sound 28 nm-grade process technology

Effective vibration area increased by

25.8%

*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.

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Hair-like thinness

0.055mm ultra-fine conductive traces

The conductive traces on the FIIO FP3’s planar driver were designed according the force principle acting on a coil in a magnetic field, F = BIL*. We leveraged a high-precision 28 nm-grade manufacturing process, allowing the conductive traces on the FP3’s driver to be a width of merely 0.055mm – as thin as a strand of hair. By making each individual trace narrower, we can pack more traces more densely within the effective magnetic field. The total length of the FP3’s traces is 486.5 mm, significantly enhancing the driving force experienced by the diaphragm while simultaneously improving headphone sensitivity.

0.055mm

Width of a single conductive trace

486.5mm

Total conductive trace length

105dB/mW@1kHz

High sensitivity

*Under constant magnetic field and input current, longer coils within the magnetic field experience greater force, leading to larger diaphragm oscillations and higher sensitivity.

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In order to achieve a comfortable and lightweight design, the development team decided to place 7 N52 high-performance neodymium magnets on both sides of the FP3’s driver. These magnets are arranged in a 7x2 pattern, totaling 14 in all. The balanced placement of these magnets allows the dual-coated traces to be distributed evenly within the magnetic field. This completes a matrix-style magnetic circuit system, ensuring that the diaphragm experiences balanced forces on both sides. As a result, the diaphragm does not move in irregular ways, which reduces distortion, and achieves high-fidelity sound.

Balanced force Dual-sided

14 N52 neodymium magnets

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The FIIO FP3 is equipped with the same F.T.B.S.* “Tesla valve” patented bass enhancement acoustic technology as in the FD15. The lengths, angles, and quantities of channels within the IEM’s cavity have been specially calculated to achieve a Tesla valve fluid structure. The result is significantly enhanced and deeply extended yet textured bass.

Deeply extended, Dive deep into the music

“Tesla valve” patented bass enhancement acoustic technology

* Patent number: ZL2024203547620

*F.T.B.S is FIIO Tesla Bass Sound

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Triple-level optimizations,

First-class comfort for your ears

Specially designed for comfort

High-precision 3D-printed front shell

To balance both lightness and comfort, the FiiO FP3 features a front shell made from high-precision 3D printing. This allows the shell to be flexibly shaped to a design comfortable for ears. This front shell is manually polishing and undergoes UV coating, leading to a luxurious texture.

Reducing the feeling of ear constriction

To break away from the common perception that planar IEMs are bulky and difficult to wear, the FP3 reduces the contact area with the human ear. This minimizes pressure on the earlobe. Combined with the lightweight net weight of the headphones, the result is a comfortable listening experience.

New ear-stable design

Comfortable yet secure planar IEMs are rare. The FiiO FP3 features a specific support structure in the concave auricle area, which improves stability during wear. Effortlessly go out and enjoy planar sound anytime, anywhere.

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Light as a feather

Lightweight 6.5g per unit

The FiiO FP3 is a planar IEM that was designed to be light for a comfortable, effortless listening experience. To achieve this, the acoustic team has meticulously optimized the product’s weight while ensuring sound quality was not compromised. The weight of each FP3 unit is approximately 6.5 grams, making it fatigue-free for extended listening sessions and ahead of its peers in comfort.

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Solidly thick, Solid listening experience

4 strands totaling 392 wires silver-plated copper cable

The FIIO FP3 comes equipped with high-purity silver-plated copper wire. 14 individual wires are twisted together to form a smaller strand, and every 7 of these smaller strands are further twisted to create a larger main strand. In total, there are 392 silver-plated copper wire. Each strand is individually enameled and insulated with enamel, and the wires are braided in Litz fashion. This design increases the conductive surface area, effectively enhancing high-frequency resolution. Additionally, the FP3 features a L-shaped 0.78mm 2-pin detachable cable. This allows you to explore a wide range of sound upgrades by simply swapping the cable. The headphone connectors and cable follow a gentle curve, an ergonomic design to maximize wearer comfort.

392 wires silver-plated copper cable

0.78mm 2-pin silver-plated copper cable

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Hi-Res Audio certified

TheFIIO FP3 has been certified by the Japan Audio Society (JAS) and the Consumer Electronics Association (CEA) to be Hi-Res Audio capable, a testament to the IEM’s ability to faithfully reproduce sound.

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FP3 specifications

Wearing method：around-the-ear

IEM Driver：14.5mm

planar Frequency response：10Hz-40kHz

Impedance：36Ω@1kHz

Sensitivity：105dB/mW@1kHz

Cable material：4 strands totaling 392 wires of silver-plated copper

Cable length：about 1.2m

Unit weight：about 6.5g（excluding cable）

Headphone connector：0.78 2pin detachable

Audio plug：copper-plated gold 3.5mm

Faceplate material：Rosewood/walnut

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Extensive accessories

①----------------FP3 box

②----Quick start guide*1

③---HB11 storage case*1

④-Treble eartips*3 pairs (S/M/L) (M pre-installed)

⑤-Balanced eartips*3 pairs (S/M/L)

⑥-0.78mm 2-pin silver-plated copper cable*1

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details innovative parallel ear canal design