Amazon.com: UpBright New Global AC/DC Adapter Compatible with Korg B1 B1BK B1WH B1SP 88-Key Digital Piano KA390 KA-390 KSAS0251200250O5 12V DC12V 12.0V Power Supply Cord Cable Wall Home Battery Charger Mains PSU :
AC/DC Adapter for Korg B1 B1BK B1WH B1SP 88-Key Digital Piano, KA390 KA-390 KSAS0251200250O5 Power Supply Cord Cable PS Wall Home Battery Charger Mains PSU : Amazon.ca: Musical Instruments, Stage & Studio