Genius SW-V2.1 1250. RMS rated power: 36 W, Audio output channels: 2.1, Signal-to-Noise Ratio (SNR): 70 dB. Satellite speaker frequency range: 20 - 120000 Hz. Subwoofer driver size: 133.3 mm (5.25 "), Subwoofer frequency range: 20 - 120000 Hz. Satellite speaker driver size: 76.2 mm (3 ")