NHT Super Surround 5.1 Includes 5 NHT SuperZero 2.1 Mini-Monitor Speakers + NHT Super 8 110-Watt Powered Subwoofer NHT SuperZero 2.1: Compact design in a sturdy, braced cabinet (Speaker Stands Sold Separately) NHT SuperZero 2.1: High performance mini-monitor speakers NHT SuperZero 2.1: 4.5-inch long-throw pulp cone woofer and 1-inch silk dome tweeter NHT Super 8:Compact size: High-pass crossover on speaker level input lets stereo users enjoy bass management which reduces distortion and belnds sub and monitors better NHT Super 8:Compact size - Only 11.2 cube yet has more output thanany 8" subwoofer we've ever made.