Has anyone ever used XLR phantom power to power a pedal with an XLR output, with that output connected to their amp? I read a review of the VT Bass DI and the reviewer claims to power the pedal this way. I have my doubts that an amp will supply power to the cable like a board can/will. And it seems like you would need to build a special cable that opens the signal lines so that both ends aren't driving them. Seems like a real stretch to me, but who knows, always good to ask such things!