The more power you throw at these speakers the better they sound. I have tried big mcintosh amps like the mc2205, giant monster receivers like the pioneer sx-1250, and massive tube amps. The best I ever heard was when I hooked up a audio research d115mkii and sp-8 that was glorious.
At the moment I have a pair of Kenwood L-09M mono blocks and a L07C preamp. BI and Tri wiring also make a difference. I havent tried tri amping yet like katman but I imagine that is the best way.