Pros: excellent noise isolation (even without NC on), outstanding and innovative control system, great sound (if a tad bass heavy)
Cons: not the lightest cans, for long journeys you'll need a spare battery (wired lead ruins sound), App is fun but doesn't really add much to experience
I'll keep this short. As a pair of bluetooth on-ears without noise-cancelling turned on, they sound quite excellent and the ambient sound is noticeably lowered. The bass is certainly boosted, but not excessively so. Mids are not intrusive but clear, and the treble is good and crisp (to my ears anyway).
Turning on the noise cancelling definitely cuts out a significant layer of outside noise, but at the cost of shedding some bass and slightly thinning out the overall sound. However, you hardly notice it once you've had them on for a few minutes, and everything sounds normal.I've found that running them with NC off gives me the best experience.
The app is clever and gives you lots of control over sound variance, and the soundstage section adds a degree of fun, but you'll quickly find yourself defaulting to the default setting, which gives you the best, but not widest spread.
I've had these for a few months now, and they are a top notch pair of headphones offering a very rich sonic experience. they're very comfortable albeit a little heavy on the top of the head at first, but you soon get used to it.
Although I've missed out nearly every one of it's great features, for a pair of BT headphones I have to say they are well made and as good as I've personally heard in the past few years. One really nice touch is that when you take them off your ears the music automatically stops and starts again once you put them back on.
Well worth a road test and these days you can find them often on sale under $300.