P7 was released in 2013 with a price tag of $399. Later it got replaced by p7 wireless which evolved into b&w px a noice cancelling bluetooth headphones. P9 is b&w's current wired flagship headphone.
Build & Comfort:
Classy combination of metal and leather. Earpads are attached with magnets. I love this design! Magnet is quite strong so when pads attach they make a satisfying "clock" sound. Hard to describe but it is very cool. All in all P7 feels really rugged, even the folding mechanism. I just wish these were smaller. These look gorgeous on desk but on my head these are pretty big and stick out more than I'd like. P7 clamps firmly on my head. Just enough to keep these bit heavy headphones from falling off and provide good isolation. I think these are very comfortable headphones.
Classic V. Prominent bass, sparkling highs and recessed mids. Bass kicks with authority with proper extension. Presentation is bit "rounded" and midbass heavy. I would not describe the bass particularly textured. But fun it definately is.
Highs are boosted but I don't experience any shrillness. For a biocell drivers I'd say P7 is well behaved on higher frequencies. I think it easily bests denon d5000 and audioquest Nighthawk in treble quality coming close to the level of Sony mdr-sa5000 .
Mids are the weak point of this otherwise good headphone. Mids have decent clarity but they lack authority. At worst P7 can sound puny.
It is near impossible to find new units these days(2018) I don't think P7 has the sound worth $399. I think Audeze Sine is only portable headphone with sound to match such price.
Luckily P7 wireless version had the same mrsp so used wired versions have been pretty cheap on eBay. $150 for a good condition P7 is a bargain especially if your favorite music is more bass than midrange driven. For allrounder portable I prefer kef m500 over P7 because of kef's better mids.