Hello Tcbannon I also own the Europas. They are powered by a Adcom 535 MKII 60 wpc and a Dared SL-2000a tube preamp.I concur with the other posters these speakers have no real signature of their own. You can make them sound the way you want ..just by changing something up stream.They don't have gut punching bass but give you the pitch and definition of the instruments like no other speaker I have heard..of course I haven't heard them all.They seem to do this without being clinical.In one word ..Real is the only way to describe them.
Good Luck with the hunt!