Home › Forums › Products › Stompboxes › Power 12v or 9 v? › Reply To: Power 12v or 9 v? March 21, 2015 at 9:29 am #127641 madmacParticipant 9 VDC, 500 mA, center pin (+) only the 2.5mm plugs will fit 12VDC center pin (+) also works and sounds slightly better than 9V. I wouldn't use anything smaller than 400mA @ 12VDC center pin (+)
