SInce you own Klipschorns why don't you use what Paul Klipsch had always recommended? Zip cord.
Those expensive cables are desigined to change the sound in one way or another. Why not just buy some high quality plain speaker wire and change nothing? Makes sense to me.
Take a look at your Khorns and look at the wire used in the network and from there to the drivers. Why don't you replace all that with the fancy stuff too? What's your budget for that portion of the job? If you don't will you have a deficiency that is counter balanced by changing the portion from the amp to the network?
What about all the wire inside your amp and preamp? Heck, it is probably only 20 ga at best......and probably plain copper or silver. That oughta go to if your doing it right. Correct?
How about those cheap coupling caps in the amp? You know the audiophile caps sound so much better. Those have to get changed as well.
You have some serious problems left in your system. You better get extra expensive speaker wire to compensate.
Think about what you are doing. What a waste.
KPT-MWM-S-LF & KPT-402-HF, '73 Cornwalls (C DB 15), '90 LaScalas (LS FB TG), '77 LaScala (LS BR), '81 Heresys (HOL), '83 Heresys (HWO).