Was an in-store demo so don't really know but they have had it about 12 days now I think. I waited an extra week to let it burn in but couldn't wait any longer, had to go and listen.
I went back to a2a (which I believe the same store that you visited) today to compare my pair (about 250hrs) to their demo pair. Me and two of the attendances listened to Nirvana - Come As You Are and Stan Getz - The Girl From Ipanema from Liquid Gold and AK380. We heard the difference between our two pair. My pair seem have better "transient" and definition. The cymbal on the left channel of the Nirvana track seem have more definition. It sound more cleaner while the demo one seem more "splashy". Soundstage also more defined at my pair and it show on Stan Getz track, when Astrud Gilberto start singing with bass at the background. With demo pair, it sound like she play the bass herself, while on my pair, bass sound behind her. It sound like the demo one, soundstage was being brought forward and "crash" together somehow, not much separation, which what I remember when my pair sound out of the box till about two days or so. Bass was tighter on my pair too.