Monster Cable MP SW 200 Subwoofer PowerCenter SW 200 with Clean Power Stage 1 v2.0 (Discontinued by Manufacturer) Dimensions: 8 3/4" H x 4 5/8" W x 2 5/8" D; weight: 0.58 lbs Monster Clean Power stage 1 v2.0 AC noise filtering for improved subwoofer performance. Maximum 1100 joule surge protection for both signal lines and AC power outlets. Audible and visual indicators for damage, protection, and ground status monitoring. Compact, cordless construction plugs directly into wall outlet.