Pedal board power supply for HX Stomp in Helix Posted October 28, 2019 I'm using the Cioks DC7. They recommend two adapter cables (that aren't expensive) to combine two outputs and then convert to the right size plug. It works great and is very quiet. I power my G10S, tuner, Drop, wah, 18v flanger and phaser. The DC7 comes with plenty of cable and they have a chart to help find if you need specific adapters.