What type amp to drive proac response 2.5

That cayin and a primaluna dialouge 2 are what i am looking at if those are enough to drive 2.5's . Moderate to pretty high volumes ocasionally .

Budget right now is around 2k on the used market . But i almost spent 3k on a pair of Atmasphere monoblocks but was too late on making a decision and they sold. In the distant future i plan on getting some ARC gear but not quite in the budget yet .

My room is 15x20 . I am using a denon flagship pre hdmi receiver . I had a Nakamichi pa7 and c7 which i sold . And used a carver 400t amp. This is all i have used to power these speakers so far . I have had the speakers for only 4 months . They sound better than any box speakers i have owned in the past even with the subpar gear i am currently using . I am expecting much more from them with a tube setup or better ss .