Harbeth vs Vandersteen vs Sonner

I use a Rogue Pharaoh integrated hybrid. 175 WPC. It has a tube preamp section and a Class D Hypex power output.

Although many of the above choices would be very good too!

I too, have Treo Ct's.

Treo's aren't power demanding. I would say any decent 75-100 wpc amp should power them sufficiently- unless you want to have a block party.
I use an Atmasphere MA-1 for my winter listening with the Treo's.

And, if you end up getting the Vandy subs, then you'll really be good to go.
B

Thanks especially to mr_m and gdnrbob for their first hand comments on power requirements for the Treo. I'm very please to hear that. And thanks to all who commented.

As Tomic601 and Bob said, you don't need a lot of wattage to drive the Vandys. The integrated amp I chose happens to have a robust amount of power output.

(((I guess my concern at the moment is whether or not that is enough power for the Treos ))) We have driven the Vandersteen Treos with a small tube amp the 20 WPC X 2 Quicksilver integrated and it works amazingly well. Because the Treos present an even Load Impedance and the amps have great output transformers. Don't hurt yourself by an assumption the unique time alignment may also win you over as it did for me.           Best JohnnyR