I've had the AD2000s for a month or so and when I first got them I found the fit bad. The driver covers touched my ears and it hurt to wear them for very long. I found a thread with the above mentioned mod of adding foam to the ear pads. They were much better but the rim of the ear pads still touched my ears. Now, 3 weeks later, the ear pads don't bother me at all. I don't know if the foam I add has broken in or the ear pads themselves, but, it is no longer an issue. The grip is still a bit tight and I'll try to stretch them out.
On another front, I'm using my Eddie Current ec01 to drive them. I had a Western Electric 396a in the driver position and it was the best sound with my Beyer dt990s and 880s. It really tamed the hot treble of those phones but it made the 2k's rolled off and kind of boring. After rolling a few tubes, including the stock russian, I found the Tung-sol 1954 jtl 5670 to sound fantastic! Tight extended bass (pretty much perfect for my tastes), beautiful, clear mids( pianos sound real!) and nice shimmery highs ( high hat rides and triangle strikes are spot on!). So far I've only evaluated the sound with jazz/pop and although I still like female vocals better on my 701s, the 2k's ain't no slouch. It's more preference on vocals though as the 2k's are more accurate and the 701s are more seductive (creamy,warm). Since I've plugged in the tung-sol, it's hard not to listen to the 2k's so my other cans aren't getting much use. They are pretty revealing though. They are so damn clear that bad recordings take a few tunes to get used my brain adjusted.
