Summary: Sennheiser have dropped the ball with these headphones.If you what to connect to the headphone using Bluetooth the built-in amp just doesn't have enough power to power drivers! so operate at half their potential.
Summary: Not really noise cancelling and even less 'portable' as the only reliable thing about them is their breakage rate when removed from a room. I have tried to get on with these headphones as I have many other Sennheiser products. My back-up 'phones are Zik, but their delay makes them almost unusable.
Summary: Desperately wanted just a little bit more volume on these. Found myself almost in tears having debated for ages about headphones and finally got these. The volume isn't there and all I want is goosebumps. Give me goosebumps! I can't get them with this volume.
Summary: Very expensive for what you get. I wish I hadn't bought them. If you fall asleep on an overnight flight and the headphones touch the seat headrest the headphones switch off and you lose the noise reduction feature. A poor design feature. So not a good purchase for travel purposes.
Summary: So you pay close to £300 for a set of wireless headphones. Good points: - The sound quality is good. - The wireless feature is great. - They're very comfortable. Bad points: - There's a lack of control buttons to make sense of the features.
NoiseGard ruins the sound - don't buy if you're depending on the noise cancellation
Jon White "rockbloke", Amazon
17 February 2013
Summary: For the first time in 30 years of buying Sennheiser headphones, I find myself having to return a pair of Sennheisers for a refund. I'm a big Sennheiser fan; I currently have the HD 595 for the Hi Fi, the HD 380 Pro for work, the MM 450-X when mobile, and the PX 100-IIi as a spare.
Summary: At £280 these headphones should've produced a much better sound than they do. They're just okay across the board with the most frustrating aspect being the volume. They're far too quiet. Even at max volume, which is how they stay all the time.
Andruck auf die Ohren zu hoch + Noise cancelling wirkt schwach
13 February 2015
Summary: Der Andruck auf die Ohren ist inakzeptabel hoch, maximal eine halbe Stunde konnte ich das aushalten. Zusätzlich wirkt das Noise cancelling kaum. Unterhaltungen in einer Umgebung hört man weiterhin störend.