In my opinion which admittedly isn't the best one because I don't have much amp experience. But I would call the Asgard an extremely good buy at $250. The fit and finish of this amp is very good and is built for the long haul. Hefty little thing that pumps out plenty of power.
 
My k601's could pair better but this amp is doing them justice for what I am willing to spend.
My ATH M50's sound the best I think i'll ever hear them, out of the Asgard. Somewhat flabby bass tightened up nicely and they are now just plain a treat to put on.
 
The amp is very smooth and fairly non-analytical, there is plenty of detail but if your looking to work with studio mixing where you need to hear everything i wouldn't look here. This amp will remain in my possession for a long time.
 
Take a serious look, besides the interesting name the people behind it are very pleasant and great to do business with.
 

I loved them while I had them, recabled them with DHC Nucleotide cable and liked them even more. There is a but, I was not able to pony up the cash to power them properly so I had to let them go. I thought I could make them work with the rig i had (uDAC->Indeed hyrbid) but it ended up just frustrating me. They were awesome with female vocals and any acoustic recordings! Every once and a while I get phantom memories of those mids and cry a bit inside because they are gone...  Someday I'll own them again!