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The Momentum M400 MxV Mono amplifier ($79,500/pair; footnote 1) is the latest iteration of Dan D'Agostino Master Audio Systems' debut amplifier of 2011, the Momentum Mono amplifier.
It began with a bad outlet. Perhaps two weeks after my husband and visiting friend created several delightful holiday light displays in the living room, one of the living room outlets died. Every time I tried to plug in part of the light show, it, along with the living room sound system and reading lights, lost power. If the Grinch didn't exactly steal Christmas, he sure tried to guarantee it would arrive silently under the cover of darkness.