Edifier C6. Audio output channels: 5.1, RMS rated power: 70 W, Recommended usage: PC. Amplification device form factor: stand-alone, Total Harmonic Distortion (THD): 10 %, Signal-to-Noise Ratio (SNR): 85 dB. Satellite speakers RMS power: 40 W. Subwoofer RMS power: 30 W, Subwoofer impedance: 4 Ом. Power source: AC