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
How can you be sure that Monster speaker cables cause it ? It can be anything or everything. In any case, don’t buy unless you can return, or willing to sell what doesn’t work for you.
You don’t really want to soften the highs, you want a balanced and relatively distortion free sound. Maybe that’s in fact your objection - high frequencies distortion.