I recently stumbled over a blog post in which a guy described how he powered his guitar pedals with a standard USB power block (the ones commonly used to charge smartphones). This is made possible by a voltage step converter which boosts the 5V (USB) to 9V traditional effect pedals require. I had not heard of them before but they seem to be quite popular among guitar players. Some manufacturers are:
If I wanted to use one of these with the Duo: would that be OK, noise-wise – i.e. is the Duo’s USB port isolated? Has anyone here used a step-up converter for powering pedals? I’d love to hear your opinions before ordering one and potentially bringing more e-waste into the world. Thanks!