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What are small gold colored "caps" that came in bag with perfect path products?

I recently upgraded my Pre/amp/CD player and cables so I'm just now getting around to evaluating some perfect path products I bought.  In the bag with alpha e cards and thing you plug into outlets are several small gold colored objects looks like a cap to something, but it is not obvious what.  Anyone know what these are ?

Thanks for your time.
berner99

Showing 5 responses by geoffkait

geoffkait's avatar
geoffkait
23,365 posts
 
Well, actually Graphene is an excellent RFI shield and many of their products contain Graphene. Gold could be simply cosmetic or used to distinguish their caps from all the other similar RCA caps that have been around since Gandhi was a Boy Scout, e.g., Cardas Caps.
geoffkait's avatar
geoffkait
23,365 posts
 
Thanks mc for posting links to my products as it looks kind of tacky if I do it. Pretty cool. I’m giving serious consideration to putting you on the payroll. Maybe as junior shill. As usual everything’s topsy turvy, me topsy, you turvy.

http://www.machinadynamica.com/machina39.htm
geoffkait's avatar
geoffkait
23,365 posts
 
We all know he’s a jerk. He can’t help himself. It’s a form of inferiority complex. Either that or a really bad case of the 🍑
geoffkait's avatar
geoffkait
23,365 posts
 
RFI. Let’s look at the wavelength of 1 Gigahertz wave for a second. It’s about 0.2 meter. So we can rule out all RF 1 GHz and below fitting into the opening of an RCA jack, let say it’s 3 mm. The hole diameter is too small. Pop quiz: at what frequency and above will RF fit into the opening?
geoffkait's avatar
geoffkait
23,365 posts
 
Just cover the open RCA jacks with copper foil. Also, is anyone suggesting something other than RFI/EMI rejection is going on here? For example, if the caps are used to cover unused RCA jacks on unplugged components.
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