Focal Utopia Headphones
The driver is similar to their voice coil.

Focal utopia headphones. Focals headphone tech is a big part of why they sound so good. They are the result of 35 years of innovation development and manufacturing of high end speaker drivers and loudspeakers. Equipped with exclusive technology they offer striking realism neutrality dynamics and clarity for sound with unrivalled purity.
Focal built on 35 years of high end speaker designs to create a revolution in headphone sound design and comfort. Closed back headphones for home and on the go use this very high end circum aural headphones manufactured at focal is equipped with a new generation of exclusive electrodynamic speaker drivers capable of working at low acoustic load while offering an extremely extensive frequency response 5hz 40khz. Since my utopia headphones arrived my akg k812 headphones have become a second class tool even if they are very good in capturing the lows the mid and high frequencies with almost a flat frequency response.
Equipped with exclusive technology they offer striking realism neutrality dynamics and clarity for sound with unrivalled purity. Utopia are the reference high fidelity headphones manufactured in france by focal. They are the result of 40 years of innovation development and manufacturing of high end speaker drivers and loudspeakers.
They are the result of 40 years of innovation development and manufacturing of high end speaker drivers and loudspeakers. Focal professional headphones meet the expectations of the most demanding artists and sound engineers. According to focal its goal was to design a full range loudspeaker fully open both front and back.
Thanks to focals lambskin leather these high end headphones are comfortable headphones. Utopia headphones widely extend the frequency spectrum of any sound from the sub bass which is below 60 hz to the top called air around 20khz plus. The utopia headphone is based on an entirely new driver design.
The engineering goals were simple yet difficult to achieve with current production conventional drivers. The utopia uses the same formerless m shaped dome style of driver thats used throughout many of their other headphones however the utopia uses solid beryllium for the drivers instead of the aluminum magnesium employed for the lower end models.