In a word, YES! I use a MC2100 and the MC100 is half of one of those . . . and half weight
From what I understand these Macs (2100, 2105, 250, 2505, 100, 50) are all basically set up the same as the MC2300. 105 watts is more than enough. I only use half of mine and never have a problem from bars to festival stages getting enough out of it. MC100s are hard to find, if it works well, and the price is reasonable I'd jump on it.