Best amp for Vandersteen 2sig

Not sure about the match but you can't deny the value you have out of the VTL.It laso sets you up if you ever want to trade in your 2.5 for identical line stage in the intergrated so you can bi-amp horizontally which would bring your RMS to a whopping 120 watts.That would probaly run $1750 or a few hundred less if your lucky but from a stock amp prespective you can get better value (though Quicksilver is a alos cheap AND good.Like VTL and Rogue you don't have your intelligence insulted with presumption that more expensive has to be bteer.Andf unlike my EAR 834 finding either the amp for $800$8900 or the Integrated for $1350-$1750 isn't that hard.I wish there were more EAR 50 watt amps availible used so I could readily do the same.Get the VTL.It will also support most any speaker upgrade you want in future even high current demand if you swap the 2.5 for a ITL-85 int.I have even though about swapping my EAR out for the VTL amp/intergated combo.
G'Luck
Chazzbo

I also have the Vandy-2sig's and am using a McCormack DNA225, which I find to be a good match. Prior to the McCormack I had a ARC VT-60 (50 tube wpc) which I enjoyed but had limited capability to control the speakers at moderate to high volume levels. At lower levels and with Jazz, female vocals, it was great.

You should consider a Vandy 2WQ Sub, which will improve system performance. I added mine while I had the VT-60 and it was a significant improvement. I lived with that set-up for quite a while and then decided to try the McCormack. I had both amps in my system for about 3 months and ultimately chose the McCormack for it's comparitively effortless control and greater dynamic presentation.

My 2ce Sigs really sing with my ARC VT60 (50wpc). My room is not huge (10 X 25 feet), this amp has plenty of power to play at high volumes.

Avoid any amp that is warm and slow. The already uninvolving Vandersteens will probably lull you to sleep. Look for something with some snap and zip, the McCormack recommendation seems logical.

Oz

I have 2cesig and had a adcom 5503 it was ok, I went to quicksilvers v4 wow these are a good match. The speakers handel detal really well so look for a good clean amp and try it I can barly hear the noise floor. Tubes really shine with vandies because they are so transparent. Now I am looking a the 5a so if you are in nj looking for a 6 month old pair of 2 ce sig let me know.