sony laptop iphone speakers ?

used but clean Sony SRS D21 - 2.1-channel PC multimedia speaker system Im using these speakers with tv,iphone,ipod sounds amazing. best thing is these speakers got earphone jack as well. This system includes a 3-piece multimedia speaker system (2 satellites + 1 subwoofer), Powerful bass-enhanced music or PC gaming sound, and 20 watts of total output power (2W x 2; 20W).