I take my AD to a city tour today, compared with my friend's LCDx and confirmed that LCDx is not an upgrade for me, I used my Yulong D200 as AB compare platform, both with factory balanced cable. On the other hand, my friends start to become very interested in my AD, what a surprise (to him) indeed.
I then tried out two amplifiers with Alpha Dog at local headphone shops, the Bryston BHA-1 offers a lot of detail, very clean, and very powerful, but in a few tracks, I am listening to notes rather then music, so more detail really not always the best deal,
I then tried a tube amp. from Little Dot, the mk6 is a full-balanced amplifier rated at 5W + 5W (120+120 ohm), My goodness, this certainly is the best sounding combo with AD I have ever heard, it is powerful and yet with a lot of passion, I just can't stop to try out test tracks from a very wide genre and yet amazed every time I hit the play button.
I am not sure if the amp. is available in US, It is mid-fi price at most (around 600 USD equivalent in Hong Kong), I am sure there a better amp. for AD out there, but not at this price range, I just hope you guys has the chance to check out this combo.