GearIT Inground Speaker Wire (250 Feet)

This is pretty decent wire. All copper, none of that garbage aluminum stuff. The sheathing is tough, and this would be good for outdoor applications. The only downside is that stripping the ends cleanly can be a bit tricky, like with UF cable. I found that using the next size up on my stripping tools left just enough material to where I could score and remove the ends without damaging the strands. After I did this a few times it became much easier. Very heavy duty and good quality. Do NOT cheap out. Get this stuff.