Amazon.com: AC Adapter - Power Supply Compatible with Korg SP170 SP170S Digital Piano SP-170 SP-170S : Electronics
Amazon.com: PPJ 12V AC/DC Adapter for Korg SP170 SP170S SP170SRD SP170BK SP- 170 S SRD BK SP-170S 88-Key Digital Piano Keyboard 12VDC Power Supply Cord Cable Wall Home Battery Charger Mains PSU :