Their tonal balance and precision in relation to the audio spectrum make them perfect for evaluating the sound work quality. Furthermore, their comfort and accessories make them very attractive for business travellers. The sound quality and dynamics of these headphones are very surprising, considering that this quality is usually found in more expensive items. The attention to detail of these headphones can also be shown thanks to the various patents and technologies of Focal. Therefore a brand new driver diaphragm has been developed. The main objective was to propose a solution that maintains all the dynamics of the original track while accurately reproducing every single detail of the entire audio spectrum.