I have had great results using a pair of fpb 350 Monos from Krell. I use a separate Krell KSA 150 to run the center and sub but the sub doesn't get much work since the 20.1 Maggies don't crossover to the sub until 40 db. Given that the Krells pump 700 watts into each Maggie (at 4 Ohms) there is plenty of reserve power. I hope you enjoy those Maggies as much as I do. . .they're a bargain if you have adequate room size for them.