The FiiO FF5 redesigns the concept of in-ear headphones, with a 14.2mm dynamic driver. They are presented as extended and resistant bass headphones, based on a carbon diaphragm. 

They are the first earbuds with a detachable MMCX cable and an open design for fine-tuned frequency response. Its external CNC aluminum construction offers a modern and 100% urban look.

The FF5 is a headphone that eschews the traditions of its form factor and features a specially developed large 14.2mm dynamic driver, employing an innovative carbon-based diaphragm.

Specifically, the driver features a PU gasket plus a carbon-based diaphragm that allows it to be lightweight and very rigid. This results in sound with fast transients and excellent treble resolution thanks to the driver construction that minimizes non-linear distortion by mitigating unwanted motion.

Inspired by flower petals, the FF5 features a beautiful and functional design. The FiiO development team aimed to reduce unwanted reflections and vibrations within the FF5's housing, leading to the development of a diffuse open design that features an acoustic damping device that allows some of the air pressure inside the earcup to diffuse outward, resulting in fewer unwanted internal reflections and standing waves for purer sound and improved bass response.

The FF5 comes standard with asilver monocrystalline cable. 14 threads are twisted into one small thread and 7 small threads are twisted together into one large thread, resulting in 4 large threads with a total of 392 threads. More strands significantly increase the cross-sectional area of ​​the strands in the cable, to improve transmission speed and stability.

Litz braiding reduces skin effect, which also further helps the transmission rate by improving conductivity. Thanks to the factors mentioned above plus excellent materials, compared to typical cables, the FF5 cable features significantly improved treble resolution which allows for highly detailed yet nuanced sound.

We found that there are very few headphones with detachable cables, which greatly reduces the usability of those headphones if something happens to the cable. The FF5 features a detachable MMCX cable, allowing you to replace broken cables or experiment with different cables made from various materials.

In addition, the FF5's cable features interchangeable audio plugs, allowing you to freely switch between the included 3.5mm/4.4mm plugs at will to properly match your source.

With each new generation of headphones, a lot of experimentation is done to ensure that performance is truly at least one step ahead of the previous generation. Compared to typical in-ear monitors, more care must be taken when designing a headset to ensure excellent sound.

After much experimentation, FiiO developed acoustic resistance tubes in the FF5 that help increase and extend the bass response. When the driver's diaphragm vibrates, the resulting air pressure is diverted to these acoustic resistance tubes, reducing resonance at the bottom.

The FF5 was designed as a pair of headphones designed for listening to female voices, and not so much for heavy bass. Therefore, much attention was paid to the representation of the frequency range and pitch of the female voice. We specifically controlled the resonance at 127Hz to prevent vocals from feeling muddy and boomy, while appropriately increasing the 2kHz-4kHz frequency range to make female vocals clearer, more transparent, and more prominent.

Thanks to the light weight of carbon fiber, the FF5 has excellent treble performance, allowing for overtones of vocals, guitars, cymbals, violins and other instruments.

The FF5 is made of aluminum alloy, commonly used in other high-end headphones, to reduce weight while maintaining high durability. A single in-ear unit weighs 3.4g, allowing the FF5 to simply disappear in your ear and you can fully immerse yourself in your high-fidelity music.

Not only three types of sponge covers are included with the FF5, but also molded non-slip silicone rings. The total of 6 non-slip silicone rings come in sizes M/L and provide a better seal for longer bass while maintaining high resolution in the other parts of the frequency response.

• 1 x Carrying case
• 1 x 4.4mm Connector
• 1 x 3.5mm Connector
• 1 x MMCX Tool
• 1 x Manual
• 3 pairs silicone rings M
• 3 pairs silicone rings L
• 6 pairs of sponge covers (open)
• 6 pairs of sponge covers (thick)
• 6 pairs balanced sponge covers