udog -- I have my 3 stand-alone mid-fi systems connected through Furman PL-PLUS DMC Power Conditioners. The unit provides a reasonable degree of power conditioning and circuit protection at a reasonable cost. Living in quickly growing area of South Carolina, I encounter a double-whammy of thunder and lightning storms and significant fluctuations in voltage. Due to the massive residential, industrial, and infrastructural development in the area, I have voltage fluctuations from 113 to 125. The good news is that my average is 121v and I can monitor near brown-out and surge levels. Consumer grade surge "protectors" used in the past resulted in severely damaged audio equipment, attributable to both a direct lightning hit to my home and the concussion of thunderclaps. I now have an all-home power protection system in conjunction with the Furmans. And, for good measure, I shut down and unplug the units when the forecast calls for severe weather. NOTE: I have acquired the units at 15-20% off list price and free shipping at Musicians Friend, which also has an excellent hands-on article on the unit written by Darius Van Rheul.
