I am looking to get a good set that will better my vintage Sansui SS-20's. Actually, they aren't that bad, but I know late 70's cans have improved slightly :). Anyways, I have been trying to find a set that isolates as well as what I have now, in and out. I have a very nice system and my preamp...

I have a freshly rebuilt G.A.S. Thaedra preamp that has over 1.5 watts of output for the hp section. What is about the limit on headphone ohms? I am looking at many new cans for an upgrade over my vintage Sansui's. is that enough output for stats? Thanks!