The polarity of this adapter is important to know because some pedals require an AC adapter with a center negative or positive pin. Is this cntr neg?

Polarity is only important when you have an adapter with a DC output, as is the case with most pedals. This adapter is for pedals that require AC power. Polarity is not a relevant spec in this case.

ASIN	B0002GYH10
Compatible Devices	DigiTech guitar effects pedals and processors
Connector Type	Proprietary
Customer Reviews	4.4 4.4 out of 5 stars (115)
Date First Available	April 13, 2004
Is Discontinued By Manufacturer	No
Item Weight	10.4 ounces
Item model number	PS0913B-120
Output Wattage	17 Watts
Power Source	Corded Electric
Product Dimensions	2 x 4 x 2 inches
Wattage	17 watts

DigiTech DigiTech PS0913B-120 Power Supply (for JHE, XAS-BM, JamMan, Whammy, EX7, GNX1, RP100-350, RPx400, BP200, Vocal 300, Vx400, EXH, VL2, VL4, HarmonyMan, and TimeBender)

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