Professional: it's written on the cardboard packaging. And for once, it's the truth !!!!

Professional: it's written on the cardboard packaging. And for once, it's the truth !!!!
This helmet is incredible by:
- The sound issued: a dynamic sound neutral.
- Its ability to restore all the music of frequency band: We rediscover his music.
- Sound insulation in noisy environments (train, plane ...): closed headphones
- Build quality (sturdy helmet, steel wire strands, gold contact)
- His clever passing 3.5mm jack 6.3mm screwing in its supplied adapter.

In short, this helmet is really true to its reputation in professional circles (shooting films, tv, monitoring, DJ ...).

PS: a period of adjustment and running-helmet (+ 50h) is required to enjoy 100% of this helmet.
PS2: its impedance 70 ohms prevents the use of a headset amplifier.