The Monster Power HTS 3500 MKII is a Home Theater Reference PowerCenter that provides the highest level of protection for all of your audio and video components. It features a high sensitivity volt meter which measures incoming voltage and shows AC power fluctuations. Its Monster Clean Power™ Stage 3 filters are optimized for digital, high current audio, and video applications. It also includes a 12 volt trigger input for remote turn-on of switched outlets, and an ultra-high 2590 joule rating providing full capacity surge protection.