I agree with Ramstl. Current , current, and then a little more...current. Maggies, like all planar/magnetic panels (Apogees for example) crave it. I have found deeply biased into class A operation work great. Reference Line (yes, they still do exist, look in the manufacturers section), Threshold/Forte (especially a pair of 4a's), older Classe, Pass, Plinius and so forth. I especially like the Reference Line stuff and were designed specifically to drive 3-4 ohm loads. They are "cheap" on the used market...if you can find one.