Monster HTS 3500 MKII Reference PowerCenter (Discontinued by Manufacturer) Monster Clean Power Stage 3 filters optimized for digital, high current audio, and video applications. $100,000 Connected Equipment Warranty. Protects coax lines used with cable TV, DBS, and DSS equipment from surge pulses. Ultra-high 2775 joule rating provides full capacity surge protection. 12 volt trigger input for remote turn-on of switched outlets.