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Rig Rundown: Jason Isbell & The 400 Unit

“Cooder-casters,” boutique amps, classic Gibsons, and a healthy amount of pedals give fire to Isbell’s brand of Southern-bred rock.

Sadler's newest guitar is this 2015 Fender Custom Shop Stratocaster.

Special thanks to Tech Michael Bethancourt for taking PG through the nuts and bolts.