I have my DT770 paired with a Meier Porta Corda III (there is one for sale in FS for $80) and the combo sounds excellent to me. Directly out of my mac mini, the DT770's were weak, unimpressive. With the porta corda, it rocks.
At about 7 AM CST I sent Jasmine my money for a DV 336i. I like head-fi so instead of buying an $80 amp selling it, then buying $200 amp selling it, then finally forking up money for what I really want; I decided to do it all at one time. From what I have read here, the DV 336i has a cult following.
I have the 80 ohm version but i'm just getting started. As long as the wife does not lynch me when the package arrives you will see me hanging around here for some time to come.