I got the AD's yesterday, and just had a quick 10-minute session with them this morning. I personally think that 10-minute sessions are fairly meaningless in an objective, substantive sense. But since I'm not a head-fi reviewer with any reputation at stake, what the heck...
The fit and finish is what I expect from a boutique product in this price category. The finish really is gorgeous.
The fit for me is the strongest suit so far. I absolutely love how they feel ( for 10 minutes at least). Then again, my headphone of choice has been Grado for the past 18 months, so another grain of salt comment. Compared to my Hifiman HE-5LE's, they are far more comfortable as well. The cups made a very good seal, even with my wire-frame glasses on.
Signal path was this:
"Trains" by Porcupine Tree, Arriving Somewhere DVD (stereo mix) -> Sony PS3 -> Marantz SR-7002 receiver, no eq, no processing-> speaker B out into Hifiman HE adapter (speaker tap)
Bass: nice, full, excellent detail and harmonics. The bass synth was present without bloat, bass kick-drum had impact. Less overall bass than the 5-LE, far more sub-bass than the Grado 225i's (as if I need to mention that). However, the bass may be a bit on the lean side. The only thing I can definitively state is that bassheads will not bond with these, unless they want to rehabilitate their listening habits and hear what neutral bass sounds like.
Mids: Clean, full. Really nice. The acoustic guitar is excellent, the vocals seem natural. This could be the second strongest aspect of the sound signature. But seriously- I will have to spend A LOT more time with these. But my initial impression is a qualified 'WOW'
Treble: Finally, someone who is presenting a 'neutral' can without over-emphasizing treble in the pursuit of 'detail'. Thank-you, Dan for respecting my hearing and not giving me zinging highs! At low-to-moderate volume, these are easy on the ears with good extension. Even the 5-LE's make me wince at times, and the 225i's are certainly offenders at bumping up the treble.
Next up, I will listen from the HP out from the Marantz. The Alpha Dogs do not need anywhere near the juice that I get out of the speaker tap.
Anyway, that is one song that I know very, very well. So far, they perform as advertised. I'm hoping that next weekend I have time for at least a 2-hour session with a variety of material