mStation 2.1 Stereo Orb-White iPod Speaker System - 2.1-channel. RMS rated power: 30 W, Frequency range: 50 - 20000 Hz, Signal-to-Noise Ratio (SNR): 70 dB. Connectivity technology: Wired. Cables included: USB/Stereo Mini. Audio output channels: 2.1, Subwoofer RMS power: 15 W, Satellite speakers RMS power: 7.5 W