We’ve owned several copies of the Marpac Dohm SleepMate 980A Sound Conditioner for roughly half a decade. We ran them close to every night in bedrooms and guest rooms. We saw no harm either to our ears, or to these sound conditioners. Indeed, we’ve found them highly effective. They cancel or cover up distracting noises such as… TVs playing nearby. … Continue reading Marpac Dohm SleepMate 980A Review