Summary: These are the best PORTABLE headphones I have yet heard. By portable I mean that they are reasonably easy to fold an carry about. They are dynamic, yet a little soft on the high end. They are very comfortable, and they are not at all fatiguing. However, they do not quite match up to reference open-air cans that are in the same price range. I have a set of Grado SR 225i's (same price) that blow these away in terms of separation, dynamics, and overall sound quality.
Summary: So these things sound good and they look good. In fact, they sound very good and look very good. But after that, they kind of fall down. Comfort: The on ear comfort is fine. I imagine for listening sessions beyond an hour they might get a little annoying. But that's not how I use portable headphones. But the padding on the band is completely inadequate. These things are much heavier than typical portable headphones. All that aesthetic has a weight penalty.
Summary: Very comfortable and great sound. I use them on a plane quite a bit and thought I would not miss noise reduction, but I do. Case is nice but wish there was a better way to put up the cable as it often get pinched when I close the case.
B&W P3 Stereo Headphone Review by Dale (updated 4 Nov 2013)
Dale Thorn, Amazon
4 November 2013
Summary: Gear note: For this review I used an Audioengine D1 DAC/Amp connected to a PC using Foobar2000 to play FLAC-format music tracks, and also an iStreamer DAC connected to an iPhone4s and pre-assembled Objective2 by JDS headphone amp to play 320k CBR MP3 conversions of my FLAC tracks. The FLAC tracks range from 44 to 96 khz depending on their source.
Summary: I like the P3s over the P5s, but didn't find it to be significantly better than other headphones more affordable than these. Given the opportunity to do it over again, I would've gone with Harman Kardon's entry level offering. Still, it's a good product.
Summary: I bought these headphones as an impulse purchase in an airport while on layover, but I have to say I'm very, very happy. The sound is great. The headphones are very comfortable. And the fold up nicely for travel/commuting. That's pretty much what you want in headphones. The only thing I would change about them is the cord. It's not all that easy to get it to stay put in the case. Also, for the money, I would have preferred that it were braided.