Samsung S2-615B, 2.1 channels, 30 W, Black, Digital, 140 - 20000 Hz, 40 - 160 Hz Samsung S2-615B. Audio output channels: 2.1 channels, RMS rated power: 30 W, Product color: Black. Satellite speaker frequency range: 140 - 20000 Hz. Subwoofer frequency range: 40 - 160 Hz, Subwoofer driver diameter (imperial): 5". Headphone connectivity: 3.5 mm