tormodvm

I'm looking for battery power for my hx stomp and I'm considering using a powerbank and a usb to 9v box. I've seen it been done with the mission 529 hc. Has anyone tried it with the Engl Power Tap Portable? According to this video, 900mA is enough for the stomp, and the Engl can handle up to 1000mA. Would love to hear some opinions on it or other options, though. :)