Capped off?

On the one hand I know a good deal about what and how. I know for example an otherwise perfectly ordinary plug can be transformed into something remarkable simply by putting a dab of goo on it. I know for example there is a reason for the little blob of gray goo on Synergistic Research Orange fuses, and it is for the same reason they tell you not to remove it. Also know something very much like that is going on with a lot of these things. 

So yes it is materials, and maybe a little design too. What materials? Aye, there's the rub.

Shorting plugs, if that's all it is, then they do nothing. The outside of the RCA is ground, and ground is ground. The inside is hot. Look inside any component you will see one wire, the hot one, going to the input selector. All a shorting plug does is connect that short little bit of wire to ground. That's it. Minus the shorting plug that hot wire was just sitting there disconnected from anything. With the shorting plug its now connected to ground. I leave it to you to imagine how much difference there can be from one foot of one wire not connected to anything.

As opposed to the magic goo. Which I guarantee you makes a huge difference.

MC, what is a PPT cap? Thanks.

I will get some caps just for the cool factor. Unless there’re people out there can really hear improvement, not difference, from those shorting plugs.

Tonight I placed shorting plugs into the inputs on my preamp. I have these gold plated plugs that were from years past. I'll need to listen for a few days to note any sonic change.

Maybe I'll get the dust caps for the outputs but I don't know if they provide any benefit.

How about those nice looking XLR caps in both males and females selling at Amazon? Anyone has tried those yet? They really look cool.