Monster Cable MP-HTS1000MKII 1000 Power Center with Clean Power Stage 2- v.2.0: Clean Power Stage 2 filtering for better sound and picture: Component-assigned color coding with matching power cord labels for easy identification: Tri-Mode power protection circuitry with audible alarm and auto disconnect: Two phone line connections (1 in/1out)(MP HTS1000MKII MPHTS1000MKII Power Center)