Stewart runs his bass into a Sennheiser 500 wireless unit that feeds his pedalboard. On the floor, the signal hits a Boss TU-3, Boss BF-3 Flanger and a Boss ODB-3 Bass Overdrive pedal, all powered by a Dunlop DC Brick.









Thanks to techs Bryan Jones and Jake Hobbs.
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![Devon Eisenbarger [Katy Perry] Rig Rundown](https://www.premierguitar.com/media-library/youtube.jpg?id=61774583&width=1245&height=700&quality=70&coordinates=0%2C0%2C0%2C0)













Zach loves his Sovtek Mig 60 head, which he plays through a cab he built himself at a pipe-organ shop in Denver. Every glue joint is lined with thin leather for maximum air tightness, and it’s stocked with Celestion G12M Greenback speakers.









