I've owned the Druids and the ZU Mini Method sub. I would recommend a fairly high powered SET amp (yes I know thats an oxy-moron) I used 10 watts for a while but when I went to a 25 watt SET amp based on the 845 tube the soundstage really opened up and the speakers were much more dynamic. With that said, however, you will need a sub to get realistic dynamics regardless of the amp you use.
