Ms. Adams is not accurate in her statement about not being able to hear dirty electricity. The facts are that when a sine wave is not clean or not delivering a clean 60Hz sine wave, you have multiples of the 60Hz riding on the 60Hz sine wave in the form of Harmonics. The harmonics ie., 120, 180, 240Hz etc. are audible. We have power quality results we measured by an power quality expert while our digital meter was on our home and the results confirmed what we were filing complaints about in Massachusetts, that being, constant audible noise, tones, buzz, hum and double the harmonics in our home, allowed by the IEEE 519-92. We have also measured and analyzed by a forensic audio engineer to be a pulsed signal of the 217Hz. To learn more go to sandaura dot wordpress dot com.