Mo, Alan has reported several times that Axiom has tested the M80s with up to 1200 watts for an extended period of time. There wasn't a detailed description given and most likely the primary interest was that the M80s suffered no permanent damage. The distortion(from the speakers, not the amplifiers)may have been extremely high at those levels, and nobody would operate their system in rational home listening in that way, but it illustrates the sturdiness of the M80s.

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Enjoy the music, not the equipment.