I have a Voodoo Labs Pedal Power 4×4. Looking at the ports on the 4×4, the first two sets of ports are 9v next to a 12v with both noted at 400 mA. These are individual taps/physical ports, not using a dipswitch. Visually, it’s one 400mA section with both a 9v and 12v port, next to a second 400mA section with a 9v and 12v plug in. Hope that makes sense. Currently I have my H90 plugged into the two 9v 400mA ports using the current doubler cable and it seems to work fine. However, I’m reading that I should consider using the two 12v 400 mA ports instead because it would be a more efficient use of the power supply. Is that true and is that safe? I don’t want to burn up the H90. Can I use two 12v 400ma ports with the doubler cable to power the H90 with this power supply?
