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Eventide Staff
David Clapp wrote:

I have just bought an H9 and I want to use it with my Batpack 8000mah 9v pedal board power supply, but it wont power up.

I believe the polarity needs reversing and also that the standard 9v connector is a different width than every other pedal I own….

I have no idea what to google, or what the width of the H9 power socket is, so I was wondering if anyone out there has managed to do this and could point me at a reverse polarity lead that would fit the H9.

Something like these might help you: