I reason that transferring digital signals between these two components is not unlike transferring digital information within a computer network. The signal conduit in computer networkds needs to be fast, high capacity and retains signal integrity through further distances. CAT cables are designed with these three factors in consideration. Since I don't think most audio/digital cables are designed with similar degree of scrutiny, I believe CAT 5 cables are better for digital audio applications than most mainstream 75ohm digital cables.
However, I can only comment on the variances in volume in terms of bits. I am guessing the lesser cable is dropping bits of resolution thus the volume sounds attenuated. This can result from the cable's inability to carry a higher capacity or doesn't have signal integrity (correct timing of bits transfer).
However, I can only comment on the variances in volume in terms of bits. I am guessing the lesser cable is dropping bits of resolution thus the volume sounds attenuated. This can result from the cable's inability to carry a higher capacity or doesn't have signal integrity (correct timing of bits transfer).