"For Mastodonуs ""Crack the Skye"" headlining tour, Brent used a Roland RE-20 Space Echo, Morpheus DropTune, Ibanez Tube Screamer, Boss GE-7 Equalizer, Boss DD-3 Digital Delay, Boss TU-2 Tuner, and Monster Effects Mastortion. The setup is packed into a SKB StageFive pedalboard with a Custom Audio Electronics switcher."


































photos by Chris Kies




![Rig Rundown: Russian Circles’ Mike Sullivan [2025]](https://www.premierguitar.com/media-library/youtube.jpg?id=62303631&width=1245&height=700&quality=70&coordinates=0%2C0%2C0%2C0)


























