inputs.text: terrific sound quality price 15 dualpower options - bought artdio 20 speaker system like 5 clearance best buy one best purchases ever made features like power 3x aaa 15v battery powered usb via supplied cable used rechargeable aaas lasted 5 months device storage sustained playback time 14 hours extremely bright blue led indicating power front wont need night light speaker turned not bright enough read usb cable not charge batteries input rear 3mm stereo jack female ipod 3mm stereo jack male removable plastic ipod adapter goes top not like front ms80[ [ asinb000p6g7ow artdio 20 portable speaker sys silver nic ] ] dont ipod listed support gen 4 computer audio not supplied usb still need appropriate cable dont remember purchase came one output 4watts powered without power speakers dont work ms70 not volume control onoff switch sound decent small bedroom sony sport cd player needed 7 distortion already louder alarm clock sorry dont know rms freq range good purchase price dont need lot volume room playing mp3ipod music