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
gunmetalzin
I would try single wiring them. Going to the bass/mid first then jumping to the tweeter. Once there you can play with the jumpers to the highs, using standard lamp cord or simply try a number of different wires available at a good hardware store. 

I think this will tell you if you need different speaker cables.
 Eddie,  Would a CD player sound the same?  With the highs 
 Sound like you listen to rock recordings.   To me 
 %92 rock recording engineers have tin ears
 Did you get any backtalk
With the Monster wire 
  Put something nice under that amp  like a decoupled footer. 3 of them. 
Let's get that right  
Western Electric would never have made that cable if they'd had today's technology.
I agree w shkong. The reason is most noise in any system come from noise on the ac power, whether from wall power or your components. You obviously get enjoyment/value from music.  Bite the bullet now If you invest in a “balanced power” ac power product like an Equitech you give yourself a lifetime investment in better sound quality. Start shopping for used now and start saving! And read info on Equitech website. Knowledge is (ac) Power - pardon the pun ;(
Although your problem could be related to speakers, room, or source equipment (I don't think it's the Monster cables), my recommendation to your original question is Acoustic Zen Satori speaker cables, and used Cardas Golden Cross interconnect. The AZ Matrix Reference II interconnect could also be a good option.