1 SPOT Pro offers triple filtered switching power supply, total galvanical isolation between 7 outputs and the ability to use it anywhere in the world. A major benefit of using a switching power supply is that it can handle far more current than any transformer-based power supply. The outputs can generally handle far more than the label shows. For example, you can connect a 300 mA pedal to a 200 mA output, without causing any problems. The important thing is to not exceed the total of all the labels. The housing is all steel, with cleverly designed vents.