Genius SW-G2.1 3000. Audio output channels: 2.1, RMS rated power: 70 W, Recommended usage: PC. Signal-to-Noise Ratio (SNR): 85 dB. Satellite speaker type: 1-way, Satellite speakers RMS power: 30 W, Satellite speaker frequency range: 35 - 20000 Hz. Subwoofer RMS power: 40 W, Subwoofer impedance: 8 Ом, Subwoofer driver size: 165.1 mm (6.5 "). Power source: AC