[quote name='dannybuoy' timestamp='1464097425' post='3056520']
I've got a 9v - 18v converter tip from Diago; this uses the same principle. Lots of pedals (EHX Glove for example) have the same circuit internally these days to get the increased headroom of 18v from a 9v supply.
[/quote]
Still gotta consider how many milliamps it will pump out .. It may not be enough to service the draw of the 9 volter