Unless you live directly behind Hoover Dam, your AC power is most likely "polluted" by appliances sharing the same power line with your home theatre components. Electrical power tools, refrigerators, air conditioners, radio transmitter, cellular phones, microwave ovens, even your neighbor's freezer, all generate electromagnetic interference and radio frequency noise, which pollutes the AC power and degrades audio and video performance. And you'll never know how much of the essential drama is gone in the high-performance picture and sound your home theatre was designed to deliver. Harmful power surges and voltage spikes can travel up the AC power line and damage connected equipment. Lightening, automatic garage doors, power tools, refrigerators and fluorescent lights all cause power surges and voltage spikes that affect phone lines and coax cables. Monster's Multiole SurgeGuard detects harmful power surges and voltage spikes before they reach components. This PowerCenter HTS800 features special surge protection for phone lines and coax cables used for DSS, DIVX /DVD and cable TV connections. Other surge protectors can result in as much as 20 to 30dB of signal loss, which ultimately affects the output performance of coax connections. Monster's ultra-low loss RF circuitry provides virtually no signal loss to maintain peak performance. Clean Power Circuitry uses special filters to dramatically reduce electronic noise on your AC power line to give you the best possible sound and picture from your components. You'll see a more vivid picture and hear more natural sound with increased dynamic range and less noise - especially if your AC power is severely polluted. You'll get back the performance you never knew you lost. Best of all, an audible surge alarm and visual surge indicator warn you of harmful surges and let you know you're getting the most advanced protection available. In the end, you'll get all the performances you paid for...and isn't that what it's all about?