I picked up a surgex 1115 power conditioner and a box made by Monster that measures noise on the power line. So i plug this monster box into my ac outlet and you turn the volume up and you can hear a radio station and i get a reading of 185. No units given. So i plug in the surgex into the wall and plug the box in. Quiet and a reading below 5. So i plug my sytem into the surgex and listen. I go check to see if i bumped the sub controls when setting everything up because the bass is way stronger. Nope its the surge suppressor. So im wondering if any surge suppressor works. I bring home a furman. Only knocks the display down to 125. So im sticking with the surgex cheap off ebay. Anyway not sure whats going on but its a nice upgrade.