Frisby FS-5800. Audio output channels: 5.1, RMS rated power: 45 W, Recommended usage: PC. Signal-to-Noise Ratio (SNR): 75 dB. Satellite speakers RMS power: 25 W, Satellite speaker frequency range: 200 - 18000 Hz. Subwoofer type: Active, Subwoofer RMS power: 20 W, Subwoofer frequency range: 40 - 300 Hz. Power source: AC