I've always wondered that too. I always thought it was a palm-muted bass line heavily processed with stuff.
I was wondering whether it's low enough to be a bass.....it seems a bit mid-rangy to me.
Maybe it's gated. There's no telling what they did. Fuck that song sucks anyway.
Probably an arpeggiator on a synthesizer-just play a chord on it and it sequences through the notes of the chord-either playing them up or downward or both.
Hey tony hows you? We gotta have ourselves a tele colab!
Sounds like it will be a fun thing to do-any song in mind?