Ive seen good reviews on the D-Sonic M3a-1200S It will do 800 watts @ 8 ohms I have the Magnepans 7's and I was feeding them with my VAC PA 100 100 tube amp and ARC LS15 tube pre amp I'm very content with this combination but felt the Maggie's could use more watts/current I found a used Spectron musical MK lll class D amp designed by John Ulrich It's a 54lb beast 500watts@8ohm 650@4ohms and 1,200 wwatts@1ohm also 65 amps for 500 milliseconds I must say I'm very impressed with the sound stage and inner detail but particularly with effortless dynamics at any db level I typically listen to music around 75db with peaks in the low 80's