I'm using this kind of cable to do a diy for my ht. I used this for inwall setup on the room addition I had. Now, the other day a question pops up in my mind "is there a shielded one"? What would be the pros & cons of this cable compared to a shielded one, if there is such a thing? I'm doing a research now but infos coming from you guys would be appreciated. My main issue is signal degradation. Thanks a lot.