fyi magnepan, at the start, jim winey used big audio research tube amps at shows showing off the speakers
over time, they switch to bryston solid state, then about a decade ago, switched again to pass labs solid state being used pretty much exclusively
hegel and other serious solid state amps with a natural smooth refined sound such as upper krells, upper musical fidelity, gryphon, classe, coda, boulder all do very well and show off everything the speakers can do - generally speaking, 100 wpc in 8 doubling into 4 (the maggies’ impedance) is a good rule of thumb
on the value end of the spectrum, odyssey and better van alstines do quite well
tube hybrids can do well too, so long as the solid state output stage is stout