I read that Magnepans love power and got the idea that ‘bigger might be better’, so I got 8AWG cables, 10ft each, as an experiment.
They’re 100% OCC copper with a 400-something strands with a micro-coating of silver.
I had already been using 10 gauge OCC copper, so I didn’t expect much, but they sounded noticeably better, and sound fine on all of my other speakers.
I’ve read that some amplifiers expect a certain resistance load and that over-doing it with the cable-gauge can cause problems, but have no issues with a Nakamchi PA-5.
Of course, these aren’t name-brand big-money cables, but I did pay attention to the quality of the metal.