NGS Dust Devil 2.1, 2.1 channels, 23 W, PC, Black, Wood, 2-way NGS Dust Devil 2.1. Audio output channels: 2.1 channels, RMS rated power: 23 W, Recommended usage: PC. Satellite speaker type: 2-way, Satellite speakers RMS power: 12 W, Satellite speaker frequency range: 20 - 20000 Hz. Subwoofer RMS power: 11 W. Power source: AC