If anything better. the insulation is rubber and not PVC so the heat resistance is much greater and wont melt like PVC will. the cable isnt as flexible, but you can still tie it in a knot if you wanted to. also with it not being as flexible the strands are tighter i suppose, while its a little harder to bend, its a bit smaller than the standard 1/0 "stereo" cable so its easier to work with as far as routing and fits into the amp terminals easier. by smaller i mean the wires are tightly packed instead of loosely braided to allow "flexibility" this makes the cable a bit smaller on the visual side but it is in fact 1/0. think of it this way, welding cable is designed to be dragged on concrete, stepped on, have showers of sparks thrown at it, laying on hot steel...etc. i know stereo cable cant stand to that. just took some pics you can see the stereo cable is "bigger" You can see the "air" gap on the stereo wire. a looser braid gives more flexibility...but then its just bulky. welding cable is tightly packed strands with a tight jacket. as far as flexibility...good enough