amp for vandersteens

A Belles Aria integrated should be a contender, especially if on a budget.
Otherwise, an Ayre AX-7. Actually, both are great integrated amps that will complement Vandersteen speakers.
Though you didn't ask, I would pair the above with AQ speaker cables.
Definitely, a match made in stereo heaven.
Bob

Budget?

Budget, yes.  Cost always is a factor.

Yes- this we can agree upon.

Something with a very forward midrange balance as the 2CEs present vocalists as small and distant. They're one of very few speaker models for which I'd probably prefer a class D amp. Look into the Peachtree Nova series.