The Pigtone brand is a professional manufacturer of guitar pedal power supplies effects pedals adapters and accessories.
Cable Polarity: Inside is negative (-) outside is positive (+)Protection function: short
circuit/overcurrent/overload/overvoltagePower polarity: external
positive internal negativeOutput voltage: DC
18VOutput current: 1A (1000MA)
Input voltage: AC100-240V 50 / 60HZDC head size: 5.5
x 2.1MMP ower: 24WLine
length: 1.14MF its most brands of guitar pedals