Monster Cable MP HTS 5100 Home Theater Reference PowerCenter with Clean Power Stage 4, v. 2.0 Monster Clean Power Stage 4 v.2.0 application-specific filters reject AC power pollution. 3145 Joule rating provides highest level of surge absorption. 24k gold-plated grounded plug for maximum conductivity. Sequenced AC power turn-on and turn-off for equipment protection and overload prevention. Tri-ModeTM circuitry with audible alarm and auto disconnect provides the most comprehensive power protection.