TheMiddleSky
Headphoneus Supremus
I've noticed that the Arya is my most power hungry headphone and while my SP200 has plenty of power with 3 watts at 32ohm I still think I'm going to get another amp.
I'm looking at a couple from Schiit like the Lyr or Asgard because I think I want a class A amp. I can't rule out the very powerful A90 either and I like that it's balanced as well. I'm in no rush so if anyone uses an amp that sounds good with the Arya let me know.
3 watt should be powerful enough, if you feed at least 3 volt input power (I think even 2V input power still sufficient). Unless you want something change in term of sound character or quality.