Mapman
Every parameter of the sound improved in my system. I cannot imagine where it would bring even one negative to a system. I could be wrong though. To me upgrading the fuses has a different result than a power cord or a tweak of another kind. That seems to add something more than something else. The fuses though seems to me it would be like the result you may get upgrading all the all the critical circuit components and wire in your pieces. The balance of sound parameters stays the same relative to each other, it is just everything is improved.
My system uses a all solid state.
All your questions will be answered when you put one in. Except maybe the one that goes like this, How can a fuse do that?