Stranded vs Solid Copper

@towertone 60Hz and you’re talking about skin effect? Are you sure you’re an electrician?

Skin effect has zero role in signal transmission at audio frequencies. This is simply more snake oil promoted by cable manufacturers and their "believers." Cables are passive devices and as a result have a linear response. Only at very high frequencies, way beyond those of human hearing, does skin effect play a significant role.

I’d agree either stranded or solid should work the same. I’d use solid for internal box wiring and stranded for cables, based solely on flexibility.

For my dedicated cuircut I used was a 30amp breaker, 10/2 solid copper, and a self grounded heavy duty outlet. I like the results. You also want to be comeing off the leg of your breaker box that your AC and the like are not on.