US 9V Power Adaptor for the IK Multimedia iRig Pro DUO Recording interface by myVolts
Amazon.com: 9V AC/DC Power Adapter for BOSS, Dunlop, DanElectro, DigiTech, Ditto, Electro Harmonix, TC Electronic, Zoom Guitar Multi Effects Pedal, Piano Keyboard by Eagleggo, Center Negative Connector : Musical Instruments
Amazon.com: 9V DC 1A Power Supply Adapter for Guitar Effects Pedal Center Negative : Musical Instruments
Finch 9v DC 500mA Power Supply
AC DC 9V 1A 1000ma Power Supply Adaptor reverse polarity Adapter Charger EU Plug | eBay
9VDC / 0.5A Regulated Power Adapter (US Plug) – CommFront