This item has been in storage for a while. Upon testing, the LINE input/output was very weak, almost inaudible. It's about 1/10th the output of the PHONES jack. The touchpad, buttons, and other controls function without issue. There are no noticeable stains or scratches. Please consider that using the LINE output to connect to devices like a KAOSS PAD would be difficult. The output from the PHONES jack is working fine, so you could either use it as is or have the LINE output repaired. The original KA350 power supply is included. If you don't need it, I can offer a 1000 yen discount.