NUX Mighty Plug Pro MP-3 Guitar & Bass Amp Modeling Amplug Headphone Amplifier Thank you for viewing! I purchased this about a year ago and used it a few times. I no longer need it as I got rid of my guitar. There are no noticeable stains or damage, but please refrain from purchasing if you are concerned as this is a used item and has been inspected by a layman. There is no box, but the instruction manual and warranty are included. After purchase, I will carefully pack it with bubble wrap and ship it immediately! No scratches or stains, operation confirmed.