Thad, just to reinforce the point made by Scott(sid), your 1015 has quite powerful amplification and is highly unlikely to prove to be a "weakness" in powering M80s, which have slightly better than average sensitivity and would require a bit less power than your M22s. Completion of your speaker purchases would seem to be the first priority and problems which may never develop shouldn't be a concern at this point.

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Enjoy the music, not the equipment.