Cyber Acoustics 3 pc Brushed Aluminum Series Speakers CA-3698 High performance speaker system with two 2-inch satellite speakers and 4-inch subwoofer; 38 watts total RMS; frequency response 38HZ to 20KHZ Magnetically shielded satellite speakers; 8 watts RMS per satellite; 10% THD Bass reflex subwoofer cabinet with tuned port; 20 watts RMS; 10% THD Headphone output jack; Auxiliary input jack MP3 cradle