Amazon.com: MyVolts Ripcord USB to 9V DC Power Cable Compatible with Korg Volca Bass/Beats/Drum/FM/Keys/Kick/Modular/Mixer/Newbass/Sample - Power Your Korg Volca from USB : Electronics
Amazon.com: 9V Power Supply for Korg Volca Syth Bass, Beats Rhythm, Keys Loop Synthesizer, Korg KA350 KROSS-61 KROSS-88 Replacement Korg Volca Power Supply Cord : Musical Instruments