Will my Dynaco MKII power My Magnepan MGII's?

"My Dynaco MK II" means you already own it. Try it. What do you think?

Good answer, Eldartford:
Try it! What a concept. I drove Maggies, some MG1s (ancient history) with about 80/side and it worked fine, until I got to a larger room with more demands. Than it simply ran out of steam. Likewise, some 1.6s with a Roten RB-1070 which doesn't even have a specified 4ohm output. Even though the rotel is pretty buff, for it's 130x2 (@8) it didn't have the grunt. 5000 cubic foot room....

You have both? I gotta ask, "why don't you hook them up and see for yourself?"

You need more horsepower.

My old Pilot with 18 watts drove my Maggies but it was a waste of effort when compared to what a 200wpc Mac could do. Even then, 200 watts is barely enough for maggies.