inputs.text: excellent value - excellent price considering features jammed thingso first standard head unit 3 stereo channels get 41 sound carit aux port need onethe usb port really best part though course meant work iphone not one friends worked fine however also plug regular thumb drive sort music make sure put songs folder called music root directory drivethe reason 1 star not always read songs proper order plays folder folder music sorted way despite track number filename sometimes played wrong orderfurthermore app android phones allow play music usb port phone however not able get work yet