I have this power supply for Boss PH-3, a Vox Bulldog and an EHX Pulsar soon a tuner and nothing to say until now, no buzz, the effects work quite well. It's really nickel and there is margeen power. In addition to its size leaves room on the strip for the effects that are not compatible. It delivers 1700mA so there something to see. The pedals generally consume between 50 and 200mA ... That said, I think the past 5 or 6 pedals would not hesitate to take over a second in case, although it is theoretically possible to put at least a dozen. € 30 for in-store is happiness.