When i first installed it i put my 8 gig ipod into it and left it for a few days with no problem but since i have all of that music plus all the rest of my music on my iphone and pandora etc i took it out and use blue tooth instead also the radio isnt as loud as the original head unit however you can adjust the output on the blue tooth on the phone and on the reciever so it goes a lot louder than the radio so thats what i listen to most of the time. Altho it has 52 watts you use yhe 4 watt preouts to hook up and not thew 52 watt side unless u bypass the amp. I have not split the subs before the amp yet considering it.