In addition to Maggies needing lots of good SS power, it should also be noted that they (usually, I don't know about the 1.6Q) need to be cranked up before they come alive (achieve flat freq. response and full dynamics)
I suggest that anyone hoping to enjoy their Maggies from time to time at lower levels (like at parties, or while reading or having dinner) invest in a hi quality equalizer to stick in the tape loop of your preamp. That way you can kick up the bass, mid-bass, and the hi's to give the sound some richness at low levels. Nor much you can do to restore dynamics at low levels though -- just have to play them moderately loud for that.
Same deal was/is true for Apogees. Those membranes are heavy compared to those of electrostats, so they need power to achieve their design potential. Tubes will never do, unfortunately.