since i have not heard the hi diamond cables, i will not make a statement about them.
but i will say that there are many cable s out there. no one has heard them all. so it is a bit presumptuous to make claims about one cable vs all other cables.
even if one says that hi diamond compared to all other cables auditioned gets closer to live sound, it is possible that there is some other cable that does a better job.
reminds me of a stereophile reviewer who (paraphrasing) siad:
"this is the best amp i have heard so far", only to repeat the statement in another issue.
perhaps i should review them. i have reviewed many, already.