Hello, guys! As I couldn't find the exact supply type my NUX Od-3 uses, I bought a universal 9v 600mA DC power supply. It has a few jacks, and both 5x2.1 and 5.5x2.5 seem to work fine. I found on the internet afterwards that most power supplies are 5.5x2.1, a jack that I don't have. I returned to the shop and the guy that works there (they sell electronics where I bought that supply from) told me that it won't be a problem if the inner diameter fits. What do you think?