i'm surprised at how little consensus there seems to be with regards to cable shielding.
it's my understanding that assuming there is a grounded conductor, that tying the shield to ground on one side only will drain rf interference and noise to the source side, preventing it from being amplified on the other end. yet most cable makers do not incorporate this kind of shielding.
on the flipside, tying the shield on both ends, while i'm not convinced it can cause ground loops -- again assuming there is already a grounded conductor -- *can cause an intense magnetic field which may introduce other problems (i'm not too sure how this manifests itself).
my suspicion is that unless you are using these cables in a very noisy environment such as a studio or computer lab, both directional and non-directional cables should work fine.
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