Agreed on the shielding not being necessary on BL PUPs. However, I've not noticed ill effects when done properly. Bill's designs are as close to perfect in that regard. Shielding Cavities, on the other hand can really help depending on where you're at and the conditions of that particular place.

In this case, however, shielding is not an issue one way or another. This has to do with purity of signal and continuity. Grounding methods are also ruled out. This seems to be about connection quality.

Edited 1 time by hoisin Oct 29 13 9:19 PM.