I haven't heard the M3 with Maggies but I have used their C275BEE stereo amp with my 3.6's with excellent results. I now use the Cary 500 monoblocks and they are definitely better than the C275 but the sound with the NAD was still excellent. The NAD cost about $800 used; the used Carys were $3,400.
I kept the NAD and moved it upstairs; would most likely never sell it. It's an excellent performer.
I kept the NAD and moved it upstairs; would most likely never sell it. It's an excellent performer.