Von Schweikert VR2

Any suggestions on a good match for these speakers
would be greatly appreciated.
Right now, I am using my backup cables (Nordost Gold)

I have the speakers dialed in to the nth degree, and
now I need to ditch the stock jumpers & backup
cables. They are very detailed & dynamic with wide & deep
soundstage. Now I want to add
a degree of sweetness.

The rest of my gear consists of:

Spectron D-1 amp
EE Mini Max tube pre.
Audio Note Cd 2.1x cdp
Wireworld silver ic's
Stock Pc's. (Upgrade planned)

System right now sounds great but a little harsh (hashy)??
"sometimes", and seem to get somewhat of a headache after
long sessions (fatigue??) I'm sure it's the $75 dollar
cables & steel jumpers!!??

Thanks for any suggestions.

Jim