Kawai K4 Digital Synthesizer (AS IS)Buttons require a firm push to respond. The instrument boots with a, "Replace Battery" message, meaning that the internal battery is either low, or has died. The pots are incredibly noisy when any of the sliders are moved. It is in need of a thorough cleaning & service. It is sold as is due to the condition. A Kawai K4 Digital Synthesizer (AS IS) in Fair condition! At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing