Thanks for this great thread WyldRage. If you're inclined to do so, ;-) Identifying which amps are suitable for low z phones would be Awesome! With the popularity of the Denons these days I think a lot of people would find it really helpful.
At the moment I use D2000's with a MMH and a Bijou and I'm looking to trade or sell them to fund a more appropriate low z DIY amp.
Basically any amp that is not an OTL.