Here is the aforementioned ’71 Super Lead that the core of his Kemper’s tone is mimicking. The head was supercharged by adding another preamp tube for another gain stage and a resonance knob on the rear panel that bypasses the amp’s low-end circuitry to avoid getting a flubby, muddy sound.



















































![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.


































