For a wireless headphones with superb sound. Receiving power but absolutely inadequate and unusable

Sonically good, the voices sound slightly "occupied" and the heights still tend very well at higher volumes to roar, but for a wireless device. About one class under the Fidelio X1 or the HD598. The dry and powerful bass (for an open design) makes fun watching movies.

But there is a wireless headphone. And that's what he can not, in spite of less interference in the environment after only 3 meters by a thin wooden wall failures. After about 5 meters with the door open complete demolition. If you read the reviews on other sites, not an isolated case. Unfortunately Sennheiser position refuses to refer to the apparent lack of received power.

Conclusion: Good middle class headphones, in its actual discipline is not recommended as a wireless device.