EMGETON iXSOUND 11. Audio output channels: 2.1, RMS rated power: 64 W. Signal-to-Noise Ratio (SNR): 70 dB. Satellite speaker type: 2-way, Satellite speakers RMS power: 36 W, Satellite speaker woofer size: 76.2 mm (3 "). Subwoofer RMS power: 28 W, Subwoofer driver size: 133.3 mm (5.25 "). Power source: AC, AC input voltage: 220-240 V, AC input frequency: 50/60 Hz