MS, welcome. Your question appears to indicate that you think that a bigger speaker requires more power. This isn't the case, and in the same line of speakers the bigger ones are quite often a little more sensitive and require less power than the smaller bookshelves. Depending on how loud of a listening level you use at your usual location, the 1610 may be fully sufficient for any of the Axiom floor-standers and nothing more powerful would be needed.

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Enjoy the music, not the equipment.