A great little psu. It does the job of supplying power to my amateur pedalboard just fine. So far I haven't had a single issue with it. It runs a BOSS me-25, zoom 505, an old electro harmonix, and 4 Riot pedals without breaking a sweat, and I have had no buzzing issues with it whatsoever. The only negative thing I could say about it, is the 500mA combined current. It would have been nice to have a bit more, but at that price it's clearly a product for home use, not for pros. And the price is certainly right, so you can't really go wrong with this. If in doubt - just buy it!