Sony SRS-A212 Active Speaker System Speakers for iPod and MP3 Players The SRS-A212 speaker system is perfectly designed for your portable audio or PC. These speakers features built-in Mega Bass, on/off switch with volume control and are magnetically shielded so you can use them next to a TV or computer monitor. 66mm Driver units Sony MegaBass sound for powerful low frequencies Power output: 3.6W