recommendation for speaker wire to soften the highs if possible


Hello,
I need help. My problem is my system sounds harsh on the highs to me. Not extremely bad, but enough that I need to fix it. My system consists of Ryan 610's, oppo Sonica Dac, and a Belles 150a hotrod amp. Speaker wires being used are old monster cable from the 90's. I also have monster cable rca. I mostly stream through Tidal. My question is can I make the desired effect by switching cables or should I add  a tube amp or pre amp. My budget on the wire would be around 300.00
Thanks in advance for any suggestions
128x128gunmetalzin
Post removed 
I recommend you to do power conditioning instead of changing speaker cables.

Look for used Power conditioner in Audiogon within your budget.



Another option is to buy the linked listing.

Tim offer 30 day’s return.

https://www.audiogon.com/listings/lis960c4-perfect-path-technologies-alpha-e-card-much-anticipated-h...

It reduce noise and make sound more natural in my system.



You can find more information on the following thread.

https://forum.audiogon.com/discussions/perfect-path-technologies-omega-e-mat
Cardas newer cable clear reflection has some of the warmth 
of the Older Golden cross,and some of their top clear .
priced pretty fair also.