9v Ac 100v-240v Au Plug Power Supply Adapter Cord Dc 9v for Gutiar Effect Pedal The plug size is the common size found on guitar effect pedals (2.1mm x 5.5mm), suiting almost all brands including Boss, Daphon, Vox and Behringer. With 500mA of current this power supply can power many pedals at the one time with the use of a daisy chain cable. Also a suitable substitute for the following power supplies: Regulated 9v DC output 100-240VAC 0.5A 50-60HZ 2.1mm (ID) x 5.5mm (OD) plug with "negative center" polarity 500mA current (can power ~10 guitar pedals at once) Works for Boss and Behringer ,Mooer,JOYO Pedals