Edifier S730. Audio output channels: 2.1, RMS rated power: 300 W, Recommended usage: PC. Signal-to-Noise Ratio (SNR): 85 dB. Satellite speaker type: 2-way, Satellite speakers RMS power: 150 W, Satellite speaker frequency range: 166 - 20000 Hz. Subwoofer type: passive, Subwoofer RMS power: 150 W, Subwoofer impedance: 8 Ом. Power source: AC