Alienvibes 110W 2.2 Channel Subwoofer PC Speaker System, Black (W401) Passive Crossover Networks for Clean Seperation of Different Frequencies Premium Quality Tweeters and Subwoofer Drivers for Crisp Highs and Punchy Lows Smooth Response Over Wide Frequencies with Exceptional Imaging and Accuracy Great for HTPC, Video Gaming System, Home Theatre System and more Stylish Design with High-Gloss Piano Finish Power-Saving Thanks to On/Off Switch Manual Control for Volume, Bass, & Treble