Please do not waste your money on exotic cable. Read the specs. There is nothing special that you cannot buy in bulk from H Depot or Lowes or Parts Express et al. You are just asking the wire to send current to the equipment. Their is no magic or fairy dust required. I suggest you use 12 to 14 AWG cable found locally were you live. I do like Wattgate connectors. I know it is hard to do but I caution you not to overthink what you are asking the wire to do. Choose a nice cable that is UL listed and capable of passing the current required and you will "Never" hear the difference in most if not all listening situations.
I also recommend a quality conditioner for source components and pre. I use Shunyata.
I also recommend a quality conditioner for source components and pre. I use Shunyata.