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Dreams of Oskar Heil
Readers with really long memories may recall the ESS Heil speakers, which had a tweeter whose working principle was described in ads as being like squeezing a cherry pit. Oskar Heil was undoubtedly a gifted inventor, and the Heil "Air Motion Transformer" principle is gathering new adherents. Elsewhere in this show report blog, I discuss the products from Adam Professional Audio, whose Accelerated Ribbon Technology is a variant of the Air Motion Transformer principle. Speakers from the Chinese company, Mark & Daniel, fall in the same category. They call their drivers "Directly Responding Emitter by Air Motion Structure" (DREAMS). The pair of Mark & Daniel Aragon Monitors (CN$5500), mounted on Aragon stands ($1900), which act as bass extenders. They sounded quite good, driven by the new Audio Oasis AMP-D1 amplifier (100Wpc, class-D, Made in Canada, CN$1495).
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