Incredible detail retrieval and comparable to k702s
I got a pair of K701s back when they were new. Those headphones, made in Austria, surpassed anything I'd heard from the major players in the $300-$500 price range (e.g., beyerdynamic 880 or Sennheiser 650s), largely because they were so neutral and natural sounding. The sound was incredibly engaging and detailed compared to the 650s that so many swore by back then.
More recently, I got a pair of the K702s that were made in China. The build quality is similar, though some details are a little less solid. The detachable cord, however, is a boon. It's easy to upgrade your cable with those.
I got a pair of the K7XXes for my daughter when she was heading off to college. After they were broken in--and these Varimotion drivers need to be broken in--they sound every bit as good as the K702s. They're a little less neutral than the K701s, with a small bump in bass that, frankly, I find unnecessary when using a decent headphone amp, like an old Headroom Desktop I have or a Schiit Lyr. They make a great set of desk headphones--they're light and they sound excellent and spacious, much more so than the Senn 650s or 6XXs, which obliterate so much high-end detail that I find it distracting to listen with them.
Would recommend to a friend.