51 Fuß Spule 1/0 AWG Mattrotes Kabel

The multi-strand copper has way less resistance than the stuff I've pulled before, and the frosted red coating slides through my firewall without snagging. I've still got plenty left over after running power to both amps, so the 51 feet is honestly more than enough.

The frosty red jacket makes chasing wires through the trunk so much easier, and the copper strands are beefy enough that I stopped worrying about voltage drop. Fifty-one feet was just enough to run power and a ground to the amp with a little slack to spare.