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
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Personally, I don’t believe a cable can effect the frequency response of a system, nor act like tone controls.

When someone describes a cable as “taming the high end” to me it seems like he’s describing a room interaction problem with the speakers, a speaker shouldn’t naturally sound shrill unless it’s badly designed or is having some serious first point reflection issues.

So basically, if you’re to believe these people, they are claiming that their cables are lowering the 2-5khz range by a few dB.

I’m not a electrical or sound engineer or a scientist of any kind, but that just doesn’t seem logical or scientific to me. 
Cables can lack bass, exhibit midrange suckout and/or lack sparkle and air and/or other frequency related anomalies. I attribute that to cables affecting the frequency response. I readily admit I haven’t checked cables with an oscilloscope. Is that wrong?