Sometimes I when I see posts like this regarding any manufacturer's products, I kind of scratch my head and wonder "Why not aks the manufacturer? Surely they would have the entire lo down!"
At any rate, here's the whole scoop regarding the "P"!!! R-v3 I/Cs taken from one of our URLs:
Self-shielding topology combined with judicious and optimal use of Stillpoints ERS treatment to counter EMI / RFI distortions. While commonly used discrete shields dissipate outside interferences to ground, it's a two way street - they also dissipate some of the music signal to ground robbing it of its vitality. Not good!
If we absolutely need to, we can build a discrete shield into the interconnect that's also dis-connectable. We also add this type of sheild in such a way to introduce the least amount of detriment.
In the six years we've been offering our cabling, we've needed to add a discrete shield only twice. Our standard methodology is good enough that we've even built single ended I/Cs in excess of 6m without issue.
Hope that clears that up for you Dennis.