Sony SRS-A202 Active Speakers with Built-in Mega Bass Sound Compact, powered stereo speakers for use with portable electronics or in space-constrained environments 2 watts per channel x 2, with 2.24-inch drivers and bass-reflex enclosures; Mega Bass circuit enhances low-frequencies 2 stereo minijack (.125-inch) analog audio inputs accommodate a PC, MP3 player, portable DVD or CD player, or other device Video shielded for distortion-free placement near TVs and computer monitors Includes AC power adapter