DE, as Dan pointed out, your 3480 should have plenty of power for your M22s. No, the maximum power rating that a speaker can handle without going up in smoke has nothing to do with how much it needs, and no "match" of the maximum rating is needed. Note that at a comfortably loud level your M22s will use 1 or 2 watts; it's unlikely that even split second peaks will use more than a hundred watts. Unused headroom just goes to waste.

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Enjoy the music, not the equipment.