FiiO F9 In Ear Earphones with MMCX detachable cables

Triple Driver Hyprid In-Ear Monitors

The F9 utilizes a hybrid design in which each channel is composed of one dynamic and two balanced armature drivers. The 9.2mm dynamic driver is specifically tuned to produce bottomless lows whilst the two balanced armature drivers precisely portray the extended upper-mids and highs.

Freely switch between balanced and single-ended with standard MMCX connectors

The F9 utilizes the standard MMCX connector for its interchangeable cales, and comes with both a 2.5mm balanced and 3.5mm single-ended cables.

The 2.5mm balanced cable is made of silver plated copper wire, which ensures a balanced sound signature and a high level of detail retrieval. A balanced cable provides greater channel separation, leading to a richer, more detailed musical experience.

The 3.5mm single-ended cable comes with a full set of in-line controls capable of playing/pausing songs, switching tracks, volume adjustment, and even calls with its high-quality microphone, compatible with both Android and iOS devices.

Design

The ripple-like lines on the F9 not only give it a unique touch, but also serve to ensure structural strength and maximize the amount of space internally for a more optimized design overall. Moreover, the inside layer of the F9's shell is specially lined with plastic to both better secure the drivers and eliminate internal resonances.

The F9 utilizes a dynamic driver made of PEK (polyether ketone) polymer nanocomposite, known for not only being tough but also being light. This allows the F9's dynamic driver to be highly capable of producing quick, detailed and extended bass.

Scientifically tuned based on physics and psychoacoustics

FiiO achieved maximum performance from the F9's drivers by looking to the laws and principles of physics and psychoacoustics when designing this product. By doing so, the drivers are able to work in perfect harmony to achieve a cohesive sound, allowing for a frequency response from 15Hz to 40kHz.

Hi-Res Audio Certification

The F9 has been certified by the Japan Audio Society to be Hi-Res Audio capable. This means that the F9 is capable of a frequency response up to 40kHz, which can fully reproduce the audio and give you a natural and life-like listening experience that truly lets you listen to the music the way the artists wanted it to sound.

Features

• Comes with both balanced and unbalanced cables
• Hi-Res Audio certified, with a frequency response of 15Hz to 40kHz
• Hybrid design in which each channel is composed of one dynamic and two balanced armature drivers