I've had mine for 2 months now.
They're very very well cooked in.
I bought them with my Astell&Kern AK120, which is STUNNING.
They have a wonderful 'British' sound signature....
Flat as piss on a plate.
Airy, Non-Fatiguing, comfy... although my right ear is not as happy as it could be, we're working on it.
They do NOT sound the same, after two months, as they did in the store.
You have MUCH to look forward to.
Read the 'Wall Of Fame' review on The InnerFidelity, and perhaps my customer review on the NAD site.
They have a wonderful, effortless bottom end, smooth smooth mids...insane vocals,and you NEVER get listening fatigue...
Some advice from an old dog.
There's TWO kinds of music you can listen to.
Files that you LOVE, and more often than not.... files that makes the gear sound as good as it possibly can.
That WON'T be Metallica.
It WILL be Morph the Cat, Donald Fagen, or Jazz at the Pawnshop. You want to hear these cans as beautifully as possible?
Use the finest source materials you can.... clearly,that doesn't include Mp3's or iPhones.
FLAC, WAV, AIFF etc.... ONLY, Muchacho.