Belkin PureAV PF31 Home Theater Power Console AP21100fc12-BLK (Discontinued by Manufacturer) Protects sensitive electronic equipment from power disturbances Offers Multi-Phase PureFilterTM Circuitry to provide the highest level of AC line-noise filtering and clean and clear power Removes electromagnetic and radio frequency interference from household appliances, fluorescent lights, and digital components Eliminates popping, hissing, static, and snow Disconnects power with Advanced Overvoltage Protection when input voltage reaches a dangerous level and restores power automatically when voltage returns to a safe level