Dunno about the power cables, but in my experience with HFC signal cables, they don't seem to follow the same pattern as that of other cables in that a lower level cable will act as a "bottleneck." By that I mean that adding a higher level cable to replace a lower level cable in a full loom of lower level cables will have minimal effect until you upgrade all of the lower level cables. Kind of like adding a freeway lane that merely moves the bottleneck elsewhere and does little to alleviate traffic. Conversely, I have found that HFC cables are additive--the more magnets the better and there doesn't seem to be the traditional bottleneck. So if you have all regular CT-1s and add a UR cable, it would likely have more effect than upgrading all CT-1's to E's, since the effect seems to accelerate more the further one goes up the HFC line.
Maybe others here can weigh in but this has been my upgrade experience. I posted more details on my experience with HFC cables in an earlier post above. IMO, the lower level of signal, the more magnets seem to influence the sound.
Maybe others here can weigh in but this has been my upgrade experience. I posted more details on my experience with HFC cables in an earlier post above. IMO, the lower level of signal, the more magnets seem to influence the sound.