I don't use a lot of pedals, but there were almost always issues with the electricity at the venues I've played, which resulted in unwanted noise. It seems that this thingie was what I was looking for. It looks well-made, and there's no noise. Plus, it comes at a great price. If you're looking for a silent power supply, you should definetly try the Rockboard V6. I doubt that you'll be disappointed.