I have this handy little unit here. great condition. everything functions just fine, nothing is broken, not any chips or gouges. some light surface scratching but nothing on the screen or really visible for that matter. does not come with power supply but am including 20AAA batteries with it. already has some batteries in it too. this thing is great to just plug a guitar or bass (or any instrument that has a 1/4" input. nice little headphone amp that you can add some effects to. it isn't for recording although I'm sure if you had NOTHING else between your instrument and computer you could use its effects. this is really great for silent practice anywhere. I do not have the manual with it but here is a pdf http://www.korg.co.uk/downloads/px4/PX4_EFG3.pdf $45 shipped. For sale only, paypal only, CONUS only.