Sometimes you, or someone else may not be able to distinguish a difference, or improvement a loaner or new component is making until you take the component OUT of the system. Every once in a while, I may not be sure about what I am hearing. Over the years, I've discovered that after removing a component I was auditioning, that when I placed the original component back into the system, the loss of the improvement was more discernible. Then I am not happy until I place the new component back into the chain. I am not sure if others experience that but it may be something to try if you are just not sure.