Might be a little over kill but, I now have a pair of the McIntosh MC601 mono block (600watts ea) all I can say is WOW! my 2ce sig 2 really woke up. Bass got tighter and deeper, soundstage got deeper and wider, and way more cleaner and clearer. I'm also using the McIntosh C2300 tube preamp with Telefunken tubes. I tell you, the 2ce Sig 2s are way underrated. I had compared them to speakers that cost 5 times the cost and the 2ce sig 2s are either sound better or just the same. I also noticed that Vandersteen speakers are amp friendly, any good amp will make the Vandersteen sounds great.