Ah, I knew Dan wasn't perfectly happy with his the latest version!
Been listening to mine for a few days now. True: They are never fatiguing, but very smooth from mid to top. I'm wishing for a bit more air and a slightly different balance, but could get used to them the way they are. Very comfortable.
What's been troubling me however is the bass performance. I listen to a lot of music where the acoustic or amplified bass is in a very important role rhythmically and melodically. Compared to the K272 or DT1350 I have at hand, the MD's are monotonic. Dave Holland was a one note man... The K272 could sing in comparison. The MD goes much lower, but not really when compared to the DT1350. Obviously the balance and other characteristics are vastly different between these models and the rest could fall under subjective preference, but damn I like tuneful bass too much to like the MD's. It also had that slightly boomy character, where each note had a bit of thump and wobbliness. DT1350 in comparison hit everything clean and differentiating the pitches of each notes much better. I've listened to them quite much from artist to artist and have even tried to purposefully exit the "analytic-mode", but that only makes it worse
You really have to concentrate to hear the musical details in the bass. Personally I have a bit of a problem with that. Could see these being used for vocal monitoring in studios however..
I will open the gates for criticism however by saying that I've driven them only with a GS Voyager through a 160gb classic (which is an excellent source, especially in comparison to many dirty low-budget desktop dacs). I have a Little Dot I+ I haven't dusted off in a while. Maybe I should plug that into my Linn DS player and give them another try, but for the moment I'm really hesitant to order the extra pads too see whether it's worth another 50usd + customs + vat.
They could function as a multi purpose desktop can for me, but if they need that much juice they're not going to cut it for me as a portable. I'd have been willing to cope with the size even..
Dan's been a pleasure to deal with and I was hesitant at first to post anything. But seeing how he's still trying to perfect his product, I thought I would after all. Guess a bit of power could cure my nit bits; we'll see.