Hmm, I've been using the MicroZOTL2 with these, haven't been blown away (not that they're bad, but not better than, say, my HE-560). Don't have a supply of other amps to try, though, will try my Liquid Carbon (don't have a balanced cable for it, so will have to try it single ended). Component matching can make a difference.
I was about ready to pack up my Elears to return them and then made a snap decision to pick up an ifi Pro ican amp on the way home from work the other night. Now I'm finally starting to understand what all the fuss is about. So running Cardas balanced Parsec interconnects into the pro ican and the oppo balanced cable to the elear seems to have hit upon a great synergy. From what I've experienced with these, either running them balanced is a must or the stock cable is really lousy. The microzotl is just not a good partner for these.