Audiophilepure

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“Although Voss confirmed by email that the amps had been broken in at the factory, Accustic Arts’ US rep, Randy Forman, told me that, in his experience, an extra 100 hours was needed. I played break-in tones 24/7 for five days. I encountered just two issues with the Mono IIs. The first was minor: The on/off buttons didn’t always depress smoothly. Although neither ever got stuck, they felt a bit chintzy. More concerning, the left-channel amp began to hum audibly on my last day of listening and continued to do so even when I removed it from the Niagara 5000 power conditioner and plugged it into the wall outlet. I checked to see whether appliances were running full force in the main house—the eightfold assault of washer, dryer, dishwasher, electric range, refrigerator, heat pump, and two computers—but the three wire-haired terriers had once again failed in their ongoing attempts to turn everything on and burn down the house. (They love the chorus of Aretha Franklin’s “Think,” which they bark in cadence, but have yet to embrace the notion of “Respect.”) Perhaps John Atkinson’s measurements will detect what the hum was about.

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