The FH7S is equipped with the same dynamic driver as in the FH9, the 2nd-gen FiiO-developed large 13.6mm DLC driver. The large 13.6mm diaphragm allows the driver to easily produce more energy for better extended bass-resulting in robust yet natural-sounding low frequencies. The diaphragm of the FH7S dynamic driver is made of DLC (Diamond-Like Carbon). Due to its highly damped nature, high rigidity, and light weight the dynamic driver is capable of rapid transient response - further adding to the sensation of dynamic bass that you will truly remember.
Features:
FH7S channels the essence of the FH9, but tailor-made for a 4 BA design
Featuring the 2nd-gen FiiO-developed 13.6mm DLC dynamic driver 03. Mid frequencies are handled by DFK driver customized by FiiO and Knowles, for exquisite vocals 04. Treble is provided by SWFK-31736 BA, with an airy and highly resolving sound
FiiO and Knowles collaborated to create the exclusively customized DFK mid frequency BA drivers for the FH7S- with the goal of creating natural, musical vocals by greatly refining the mids. By adjusting the air permeability of the midrange drivers, it leads to a more natural, distinctive and smoother connection between bass, mids and highs. Meanwhile, vocals are clearer and more captivating with just-right richness.
The high frequencies are produced by the Knowles SWFK-31736 BA driver with its high resonant frequency. The driver contains richer highs details and airiness while also helping to further enhance the size of the soundstage, which is relaxed and comfortable to listen to.
The FH7S features a design resembling that of armor seen in sci-fi, futuristic weaponry and machinery. On the faceplate of the FH7S lie neat layers of carefully-placed holes stacked upon each other that form its semi-open design. These are combined with silver and gold trim as well as air guide nets for a meticulous balance between form and function. Finally, the FH7S still retains an overall rounded shape that perfectly fits the human ear for comfortable extended listening sessions
Using finite element analysis and after numerous experiments, the development team created a unique notch filter for the FH7S. The notch filter precisely guides sound waves to eliminate unwanted resonances between the shell, sound tube, and ear canal to suppress undesirable sibilance- resulting in a detailed, transparent yet unfatiguing sound.