Focal Spirit Professional Over-Ear Headphones - Discontinued professional and comes in the following

and comes in the following adapter sizes:

Praised for their technical excellence

the density of the diaphragm material should also be as low as possible in order to increase fidelity

On headphones this means lower distortion

Frequency Response :20Hz - 80kHz (+-3dB

Focal Spirit Professional Over-Ear Headphones - Discontinued professional and comes in the followingAcoustic transparency and ease of use Precise and detailed sound reproduction, without distortion Excellent isolation and acoustic coupling to the ear Total control of the audio band Optimal comfort Focal Spirit Professional Closed back, Circumaural professional headphones Focal Spirit Professional headphones have been specifically designed to meet the expectations and requirements of Recording Studios, Home Studios and Broadcasting Studios. Reference