Used 2.5mm To 4 Pin Din Ac Power Supply Adapter Convertor For Korg Dl8000r, Korg N1, Korg N1r, Korg N5, Korg N5ex, Korg Sp500 - Audio & Video Cables - AliExpress
Amazon.com: HQRP AC Adapter Compatible with Korg KM2 Mixer Karma N1 N1R N5 N5EX TR TR88 Triton LE Synthesizer Triton Rack SP500 Digital Piano TP-2 Dual Tube Preamp ESX-1 Electribe MX EMX-1