Struggling to find good power for this.... I have a strymon Zuma a Voodoo labs current doubler (two to 1 y cable) and a 2.1mm dc cable that i use for my h9. plug it all together into hx stomp and nothing, won't even power up. The reason I bought this was because in the manual it says that it seems to work fine of a Zuma r300 with two outputs doubled together and the outputs on that are the same to a standard Zuma so I'm a bit confused either I am doing something wrong or have the wrong cables can anyone help as I really want to get this onto my pedalboard.