The power cable zealots will tell you that it is not only the gauge but the materials and the construction/weave that matters, plus the termination/plugs. I remain an agnostic and leave the stock captive power cords on my gear alone. I did buy a $99 Pangea to use experimentally on one amp that requires an add-on cord. The cable zealots will tell me that I will have to spend $500 at least to hear an improvement. Go figure!