Edifier Aurora. Audio output channels: 2.1, RMS rated power: 22 W, Recommended usage: PC. Total Harmonic Distortion (THD): 10 %, Signal-to-Noise Ratio (SNR): 85 dB. Satellite speaker type: 1-way, Satellite speakers RMS power: 7 W, Satellite speaker impedance: 4 Ом. Subwoofer type: passive, Subwoofer RMS power: 15 W, Subwoofer impedance: 4 Ом. Satellite speaker dimensions (WxDxH): 59 x 59 x 67 mm, Subwoofer dimensions (WxDxH): 280 x 59 x 87 mm, Set weight: 1 kg