Didgeridoo with aplifier. Played with reverb and echo.

[@DJ_TideWave]

Everytime I hear this sound I think of the movie War of the worlds!

[@animalbeats]

Hi, What are you using to power the amp?

[@halfpipefreak]

Lookup this : Roland street cube ex.
I think he is using that amp. Not 100% sure tho but i'm guessing that's the one, Runs on 8AAA batteries if i remember correctly.