Check this out.

The doubt of a sleeper lie under the pillow and the doubt of those awake  lay over the pillow...

 The question is not to doubt or not.... Even dreamers doubt...

The question is am i awake and able to verify and experiment by myself ?

Audio threads are full of people doubting and prey to consumerism  conditioned superstition...

Their doubt is the expression of a faith or empty opinion...

I would think contact enhancer would be a maintenance item...prevent corrosion, facilitate removal.

Fuses would be an obvious manufacturer marketing tool if what you guys say is true. Or something that could negatively impact their engineering credentials. I am not going there as too many warranty and resell implications. 

Live long and tweak away.

(btw Rick did me a solid not long ago and I appreciate his positive impact on the community.)

People are claiming it actually enhances the sound.
More than once I've come across things in here that seemed strange, perhaps nonsensical and they are used with great success.
For example, a little black box with inductors, transformers and capacitors has entirely transformed my system by lowering the noise floor.
Two big wooden sideways bookshelf looking furniture have cleaned up lower frequencies, widened the sweet spot sitting position and reduced flutter echo.

I heard cable lifters in a friend's system pulled out and replaced, I purchased two packets of them for mine.

Keep your mind open, wallet closed, and weigh it all up, go listen if you can and move forward from there. If you're never challenged or surprised in here, I know I often am.

Theodore will be selling them next week and filing a law suit against Gustard.

24.99 and 14.99 shipping lol.