Guidance on Speaker Wire

My biggest issue is I have long runs from my amps to the speakers at approximately 60 feet each.

Your listening space is over 120 feet long? This I’ve got to see. Post a photo!

I’d use a custom fabricator btw. Most will work on special order. PM me if you need references.

(PS: Before a spectrum commentator objects, I realize that as described the space may be less than 120 feet long.  However, it may well also be longer.)

Isn't it possible to use long 'balanced' interconnects and get the amps near the speakers for shorter speaker wire?

remote switched power for the amps?

make your own? I did it once, knowing nothing about wires.

In 1978, age 30, I had to run 50 ft speaker wires once. Never used anything more than Radio Shack ’lamp cord’ before. My primitive instinct was, need a lot of copper.

Without doing any research, and having no money, I went to electrical supply house, bought 4 spools of heavy gauge solid core wire, 4 different colors, stiff but able to flex/bend/navigate.

Twisted them clockwise for about 4 ft, taped, twisted back other direction 4 ft, tape, back to clockwise, IOW, you don’t need to twist all the same direction which would involve flipping the entire length of wire over every twist.They worked, never a problem.

1998, 20 years later, new arrangement needing only 12’ lengths, doing research, I decided to believe in small solid core, multi strand, individually insulated, jacketed. Sounded like Cat 5, so I twisted two pairs of Cat 5, each leg 8 strands each, been loving them for 22 years, tubes, SS, tubes,

Years later, my friend who always had pricey cables but loved my system before and after, found a company making speaker cables out of cat 5, but using a pair, 16 strands per leg, factory connectors. His runs 10ft. Bought em, loves em to this day.

Point is, what I decided to believe in, very small solid core is opposite of those long large diameter solid core. Difference? I never was able to compare them.
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*** I read here not long ago, there can be technical issues with long runs of cat 5 for speakers, others could say ***

Whenever someone has very long runs, I always recommend they first try Blue Jeans 10 gauge and they may get lucky.  With one set of speakers, I found BJs to work wonderfully until I tried them on another speaker, which sounded like a tin cup on a cheese grater.  But IMO, you should try them and you could totally luck out and save thousands.  If they sound like crap, my guess is you could sell them at half price pretty quickly and only be down a couple hundred for your trouble.  But at least you'll know.