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RE: MA-1s are fine on Sound Labs.

A few years ago Roger corrected an error in the backplate of the Sound Labs, making them significantly easier to drive (and sounding better with any amplifier). The low impedance is at very high frequencies so there's not a lot of power there. Before this change the MA-2 was about the only game in town that worked right on that speaker (about 80% of our MA-2 production is running on Sound Labs) but after the change you could do the same thing with a set of MA-1s.

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