Martin Era Jason Isbell Signature Treated Phosphor Bronze Acoustic Guitar Strings – 12–54 pickup Each strap is meticulously crafted

Each strap is meticulously crafted to meet the highest standards

Individually voiced soundboard for balanced

Tuning machines golden with lyre design and black buttons

The laminate maple body features a maple center block that provides excellent sustain and minimizes feedback

Martin Era Jason Isbell Signature Treated Phosphor Bronze Acoustic Guitar Strings – 12–54 pickup Each strap is meticulously craftedDeveloped in collaboration with six time GRAMMY winner Jason Isbell, Martin Era Jason Isbell Signature strings are built to deliver a warm, broken in tone with a natural feel that responds beautifully to dynamic playing. Designed to reflect Jasons preference for a traditional, expressive acoustic sound, this Artist Light set blends classic phosphor bronze character with modern string technology for exceptional balance, clarity, and touch sensitivity.