If you can find one used the Primare i30 is a great match with Proac's and should help you achieve the sound you are looking for. I would steer clear of the newer Primare amps as they have gone to class D.
At a much higher cost the Leben CS-600 integrated amp is the best amp I've heard with the D2's.
You might want to touch base with JohnnyR at the Audio Connection. He is a Proac dealer and likes the D2's very much. Good Luck!