FiiO FX15 4 Electrostatic + 1DD + 1BA Hybrid In-Ear Monitors


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614,67 €

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Brand: FiiO


FiiO FX15 4 Electrostatic + 1DD + 1BA Hybrid In-Ear Monitors

  •     4 electrostatic + 1DD + 1BA hybrid in-ear monitor
  •     FiiO's first IEMs with EST drivers
  •     Hybrid configuration with six drivers
  •     Four high-resolution SONION electrostatic drivers
  •     One high-performance Knowles balanced-armature driver
  •     One custom-designed dynamic 10mm DLC dome driver
  •     Unique conceptual "Sound & Shape" design
  •     Switch to turn on the EST drivers
  •     FiiO's patented S. Turbo acoustic architecture
  •     Professional DLP 3D printed resin ear cups
  •     Ergonomic and lightweight
  •     224-core high purity sterling silver cable
  •     Secure MMCX connectors / Modular connector system

The new FiiO FX15 is a multi-driver hybrid IEM featuring a hybrid driver set with six drivers on each side. The pair houses a combination of three types of drivers:

a 10mm DLC Dynamic driver,

a Knowles Premium Balanced Armature driver

and four Sonion EST drivers.

The FiiO FX15 is FiiO's first product with an EST implementation. It has been designed with extreme precision and great professionalism to deliver high-end sound quality and a comfortable wearing experience. With professional tuning settings, the FiiO FX15 delivers great sound resolution and the ultimate music listening experience to its users.

Premium sound with advanced architecture

The FiiO brand has years of experience in designing and developing premium audio devices. FiiO has designed the latest FX15 with a unique six-driver hybrid configuration that promises high-end sound to its users. The pair consists of a dedicated 10mm DLC dome dynamic driver for a powerful bottom end, a Knowles midrange/treble driver unit and four Sonion EST tweeter driver units. The drivers work together to produce a truly high-resolution sound output.

FiiO's first implementation of electrostatic drivers

The FiiO FX15 is FiiO's first implementation of high-resolution electrostatic drivers in IEMs. The brand has collaborated with SONION, one of the leading brands in the industry, to deliver high-quality and high-performance electrostatic driver units. Using four EST drivers on each side, the FiiO FX15 delivers a hugely detailed high frequency band.

Switch on the EST drivers at will

The EST drivers are arranged here to enhance high-frequency extension and provide users with impressive high-frequency resolution. The pair features a switch that allows users to easily turn the EST drivers on and off.

FiiO's patented S.Turbo acoustic design

To enhance the low frequency response produced by the dynamic driver unit, FiiO has equipped the pair with its patented S.Turbo acoustic design architecture. It incorporates an ultra-thin and long acoustic tube that significantly improves the pair's bass response.

Professional tuning settings

The FiiO FX15 is a true high-resolution in-ear monitor that promises high-end sound with its exquisite driver setup. The pair is tuned to deliver a balanced sound with powerful bass, beautiful mids and smooth but detailed highs.

Exquisite looks with "Sound and Shape" design theme

FiiO's FX15 IEMs feature an eye-catching ear cup design. The design of the pair is inspired by the "Sound and Shape" design theme. The pair looks beautiful with its designer covers.

High-precision 3D-printed ear cups

FiiO has teamed up with a top brand in the industry and used their exquisite craftsmanship to create the beautiful FX15. The pair is made from high quality resin material, manufactured using high-precision DLP 3D printing technology. The shells are lightweight and promise to keep the listener comfortable.

High purity cable

To ensure that the FiiO FX15 delivers premium sound performance, FiiO ships the pair with its high-purity 224-core sterling silver cable. It features an interchangeable connector system with 3.5mm and 4.4mm plugs included. The high-purity wire core allows for smooth signal transmission with low internal resistance for the audio signal.




Frequency range: 20Hz-40kHz

Sensitivity: 103dB/mW

Connector plugs: 4.4mm+3.5mm.


FiiO logo

About FiiO Electronics Technology Co., Ltd.

01 Brand Introduction - HiFi+Fashion

FiiO Electronics Technology Co., Ltd. was established in 2007.  It is a high-tech enterprise that combines research, development, production and sales, and its sales are mainly based on its own FiiO brand as opposed to OEM/ODM.  It focuses on digital audio, with current mainstay products being portable headphone amplifiers, DAC / amps and portable digital audio players.

FiiO: It is composed of Fi (Fidelity) from HiFi and iO (represents number 1 and 0) which indicates the sincerer feeling and more convenient life the digital tech has brought to us.

飞傲: The Chinese transliteration of FiiO, as well as representing youthful vigor and the active & innovative spirit of the company.

Audio products are meant to fulfill the spiritual pleasure of users.

  1. FiiO provides products and service related to music.
  2. We also hope to bring happiness to our users with the provided products and service, which is also the key value of FiiO.

Customer Service

  1. Good after-sales service, more reliable
  2. Great user experience, more pleasure
  3. Variety of activities, more involved

About products

  1. Affordable: FiiO products are well-known for its feature of high cost-performance. Lowering the entry level to make more customers can afford.
  2. Easy to use: FiiO pays great attention to the user experience. We are not only provide products with high quality, but also easy to use and with long lasting durability.
  3. More accessories bring more fun: Enable to play in a variety way and use under more possible environments.
  4. Updates available: Equipped with a variety of ports, it makes the music players can still connect to external amp/DAC for upgraded enjoyment.
  5. Endless transformability available: With replaceable amp module and expandable storage, the X7 can bring more playability.

02 Company Profile

Research & Development Team

  • Twenty years of R&D experience in audio products
  • Former core R&D team for audio products from OPPO
  • A team of 20 professional R&D engineers in software, hardware, industrial design, structure and electro-acoustic.

Research & Development Investment

FiiO keeps bringing in advanced equipments and high-tech talents so as to ensure the stable growth and long term competitive edge. Up till now, the team size has expanded three times than that of 2007 when we established.

Team Composition

The R&D team is made up of development dep, engineering dep and QC dep, with 60+engineers in total.

Authorized certifications

FC, CE, KC, CCC and ISO9001:2008 ensure the safety and quality of the products.

Production management

FiiO has strict requirements to production with almost “zero tolerance” even to small problems, which is strictly in compliance with the International Quality Management System ISO9001. 

QC Equipment 

  • a. AP audio analyzer (valued at 200,000RMB).
  • b. Life-span test platform against high & low temperature, swing and plug & unplug trial.
  • Aging test carriage towards mass production.
  • Aging test machine under high & low temperature.

Customer oriented

Driven by customers’ needs, we innovate constantly and response promptly to the market changes. We develop new products based on customers’ needs and compete for more market shares.

Company culture - Our Vision

Present the world a better “Made in China”.

Brand Spirit

  • Innovation

the earliest company that designed the minimum volume headphone amplifier. First dockable amp & DAC product. First amp specially designed for iPod/iPhone. First amp with adjustable power supply and power supplied by mobile phone battery. First multifunctional headphone amp & DAC for Android smarphone. First Hi-Res music player at a price lower than 1000RMB supporting 192K music. First Android-based Hi-res music player. 

  • Quality

Repair Rate < 1%. Sound Quality Control system. Original components imported from TI, Wolfson, Maxim. Company-wide quality control. +20 quality engineers and inspectors. Complete testing facilities. 

  • Service

CEO at the frontline of customer service. 100% response to enquiries. The most popular headphone amplifier brand on Head-Fi. First class website and contents in the audio industry. Interaction with and support to customers on Facebook and Microblog (twitter-like social website).

Brand Mission

FiiO designs, produces and sells high-quality products at favorable prices to those who love music and style.

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FiiO FX15 4 Electrostatic + 1DD + 1BA Hybrid In-Ear Monitors

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