I have been using them (Cardas caps) on my system for years. I won't tell you that I hear any difference, but I don't seem to have any EMI-RFI issues either. But one of the benefits that I like is the clean jacks. No dust is getting in through the jacks and I find that reassuring.
Input /output caps
Have seen for some time now that some manufactures use "sheilding" caps on the unused input/output jacks in an effort to reduce emi/rf and enhance sonic benefits. My question is has anyone one been using them and if so WAS there a preceviable sonic difference with them in use (as I realize that it could be subtle)? Becuse Cardas caps aren't that expensive and could be an inexpensive tweak for me to try then. Thanks for the input.