Check out Phil X as he takes on the world’s heaviest guitar. This is a one-of-a-kind Custom Triple-neck guitar was specially built by New York Luthier Sam Koontz between 1965 and 1967.
![](https://images-r2-2.thebrag.com/rs/mag/19/cover.jpg)
Get unlimited access to the coverage that shapes our culture.
Subscribe to Rolling Stone magazine
Subscribe to Rolling Stone magazine