FF5 - detachable cable carbon-based dynamic driver earbuds

The FFS is an earbud that eschews the traditions of its form factor, and features a specially-developed large 14.2mm dynamic driver that employs an innovative carbon-based diaphragm. Specifically, the driver features a PU gasket plus a carbon-based diaphragm that allows the driver to be both lightweight yet highly rigid. This results in a sound with quick transients and excellent treble resolution thanks to the driver construction minimizing non-linear distortion by mitigating unwanted driver movement.

Like a flower in bloom with its many layers of petals, a carefully tuned earphone can reveal many layers in the music. Inspired by flower petals, the FF5 features a design that is both beautiful and functional The FiiO development team aimed to reduce unwanted reflections and vibrations within the shell of the FF5, leading to the development of a diffuse open design featuring an acoustic damping device that allows some of the air pressure within the earphone to diffuse to the outside — resulting in less unwanted internal reflections and standing waves, resulting in purer sound and improved bass response.

The FF5 comes standard with a silver-plated monocrystalline cable. 14 wires are braided into a small strand, and 7 small strands are braided together into a large strand — resulting in 4 large strands with a total of 392 wires. More wires significantly increase the cross-sectional area of the wires in the cable, for enhanced transmission rate and stability. 

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