Dimebag Darrell’s Digitech WH-1 Whammy

Dimebag used the Digitech WH-1 Whammy pedal to create quick jumps in octave, most famously heard on the main riff for the song “Becoming” from Pantera’s 1994 album Far Beyond Driven.

Basically, I just use the two octaves up on the whammy pedal, blowing sh*t up, grabbing octaves, and going up for that “squeal” sound. Probably most famously known on “Becoming”.

Dimebag Darrell talks about his gear in Damageplan

At one point around 2000, he ran two of these on his pedalboard, as can be seen on a rig diagram published by Guitar.com, that’s readily available online.