The CA-3908 2.1 Channel Powered Speaker System with Control Pod from Cyber Acoustics features two satellite speakers with 2" high-efficiency drivers and passive radiators as well as a subwoofer for premium audio. The system features an auxiliary input, bass volume control and headphone out jack for private listening. The satellite speakers are magnetically shielded to prevent interference from other electronic devices. Additional features include an on/off switch, master volume control and removable cloth grills. The system is powered by AC.