MyVolts 9V Power Supply Adaptor Compatible with/Replacement for Korg Monologue Synth - US Plug - - Amazon.com
Amazon.com: DCPOWER AC Power Adapter Compatible Replacement for KORG Monologue MONOPHONIC Analogue Synthesizer : Musical Instruments
9V 2A DC Adapter Charger for Korg Monologue Synth Power Supply Cord Mains PSU 619634547975 | eBay
9V Power Supply Adapter Monophonic Synthesizer Fit for Korg Monologue KA350 Volca Series Charger Musical Instrument Accessories|Guitar Parts & Accessories| - AliExpress