I just purchased a pair of Von Schweikert VR-1 monitors, and currently have them hooked up to my Marantz SR-7000 receiver. I am extremely happy with the new VR-1's and the sound I get out of them with the marantz, i'm just wondering if adding a dedicated amp will improve the sound at all.

I was thinking along the lines of the Rotel rb-1050, or possibly the 1070. What others in this range should i consider?