RCA Caps

I bought a set of 10 pair of caps from Vintage Audio Lab off of eBay for about $20 shipped. Not really sure I can tell a difference, but better safe than sorry. Especially since it was only $20.

I bought 80 caps off eBay and they are pretty good for the price of 20 for $15 bucks.
I definitely noted a better screen on my Plasma TV with covering all the RCAs on the back. The background had less grain. So for the TV, they really are worth the money. For the stereo, i would say it too had a very slightly 'blacker' (quieter) background.
For the price of the Cardas, it is a little steep, but for some generic type, they are worth the bother, on stereo equipment, somewhat.

IMO, for unused rca INPUT jacks shorting plugs are preferable to caps, although of course in many cases I would not expect either one to make any difference.

Caps will do nothing to reduce coupling of internally generated rfi/emi onto the unused input lines, from where it might couple into the signal path that is in use. The same goes for rfi/emi that may originate externally, but which enters the component via a pathway that bypasses the rca jack and then couples onto those unused input lines. Shorting plugs can help in either of those situations.

Shorting plugs should not be used on output jacks, of course.

Regards,
-- Al

Excellent response as always Almarg, I was going to mention the same thing. I also, have not experienced a difference when using the RCA caps. I need to mention that I have never had a problem with EMI/RFI either and therefore YMMV.

I am gonna buy some clear plastic jobbys, anyone that does vintage knows that the jacks are closer together and with the plastic jobbys I can cut the edge off to fit. I just wanna keep the dust ( dead skin ) off.