Listen Professional circum-aural closed back headphones are the essential work tool for music production. Their tonal balance and precision in terms of audio spectrum make them perfect to evaluate the sound work quality. In addition, their comfort and accessories will make them very attractive for people travelling on business trips. The sound quality and the dynamics of these headphones are very surprising considering that this quality is usually found on more expensive items. The attention to detail of these headphones can be also shown thanks to the various patents and technologies which belong to Focal. Hence, a brand-new driver membrane was developed. The main goal was to propose a solution which would keep all the dynamics from the original track while reproducing accurately every single detail on the whole audio spectrum. Even if Listen Professional headphones are closed, they produce a very lively sound, giving the feeling of semi-open headphones while still providing the isolation of closed headphones.