Okay first impressions:
on my phone the volume could do with being a bit higher; okay for general use, but in an aircraft would need to go higher.
on the PC at full volume it goes pretty high, any higher would be uncomfortable. Especially with 'headphone power' set to ultimate, very loud.
Highs are great, I can make out more details listening to classic rock, especially any cymbal related sounds.
Lows are also great, not as 'thumpy' as my cheapo creatives, but that's not a bad thing; I do hate over-bass speakers/headphones. I played them back to back and my god the creative ones do sound bad (I knew that, but this just highlighted how much). Even listening to pop music there's sufficient bass to get you into the mood. Playing something with not as much 'thumpy' bass but with still lows like classical was still very defined and loud.
I noted how great separation sounds, I could definitely make individual instruments at individual drivers.
Noise isolation is great, even with the headphones on my phone I couldn't hear my gf from 1 metres talking rather loudly (bonus points here
), although she could hear the music a bit.
I am not used to such good build quality headphones, so feel a bit of discomfort from the headband, but I'll persevere for now in the hopes that it'll get slightly softer and I'll also get used to it.
Another point to add is that instrumental jazz sounds fantastic, not that other genres aren't great on them, but jazz just shines a bit more for me.