You ask good questions, ones that I don’t know how to answer, except to say none at all. Being impractical, what I can offer though is the Fluorinated Ethylene Propylene (FEP) found in Nordost is better than most, but that is the gapped sleeve and monofilament (spiral wound/point contact) and air is actually the (better) majority of the dielectric. In my experience, these cables can’t be beat for tonearm to phonostage transmission. I haven’t found anything faster or less colored. Some may choose cabling as a tone control beyond this point, but source retrieval deserves the most transparent and honest of cables IMO.
