
From Macnn.com:

From Macnn.com:
That was my hope, too. I liked the P5, though not enough to keep them. It's not surprising that they went with IEMs though--it's a larger and more lucrative market.
They look nice. Who knows? They may be the next FOTM. 
in the overview says
| Technical features |
Secure Loop design
Whatever we make, the goal is the same: the most natural, realistic sound possible. With C5, you can take true sound with you wherever you go. C5 is a mixture of long-held acoustic principles and technological advances, key among which is the Micro Porous Filter. This acts a diffuser, enabling C5 to deliver pristine, natural audio, while also providing a more spacious performance than previously possible from in-ear headphones. Together with C5’s noise-isolating design, this allows users to lose themselves in flawless audio.
It doesnt like a bass head in-ear, especially because of a these micro porous filter, but the presence of a dynamic driver instead of a BA dont give me confidence to believe in a "most natural, realistic sound possible"........ |
Sounds promising. Would probably wait for impressions before pouncing on this 
I think it's hard to tell. The wire does look beefier in the image, but it may be because the driver enclosure is so small in comparison to the P5. It may end up being the same thickness as the P5, seeing as there is a focus on active wearers.
As for the sound, it is almost irrelevant at this point in speculating on the sound until someone in the UK bites the bullet, buys a pair, and reports back. B&W's marketing literature for the P5 said that it was a natural sounding headphone--which it is not exactly the case.
I have to disagree. It looks to me like the thicker part is the memory cable. If you keep on looking, you'll see the cable thins out after the black part, and that to me looks pretty thin.
Having owned several sets of B&W loudspeakers over the years, I'm interested to see what kind of reviews these get and how they sound. Selling off my Denon D5000s and Meier DAC/amp combo to simplify. Tough shoes to fill with that setup though.
subscribed!
I just got a pair on the mail today :) First [short]impressions
Bass
Overpowering beyond belief. The bass is impactful, but borderline muddy and does intrude into the mids a bit. I really hope that this settles down with burn in.
Mids
Recessed compared to the lows. Somewhat overpowered by the bass, otherwise, timbre isn't the best; it's passable, not great though. The mids are thicker but lack sweetness. It really makes me miss all the mids in all my favorite songs. The mids just didn't make it for me.
Highs
More leveled with the lows (but bass still dominates), so gives the V-shaped sound to them. The highs have some sparkle, and don't decay too quickly. It's not harsh at all though, which is a plus. Details and clarity are both missing here though. Like the mids, they can still be dominated by the bass.
Right now I'm not enjoying these too much, they are passable. I really hope that burning these suckers in will smoothen them out as these are just way out control right now.
What source are you using.