Martin Era Treated Acoustic Guitar Strings .012–.054 Artist Light (Jason Isbell Signature)

Martin Era™ treated strings represent a new benchmark in acoustic string design, combining Martin’s most advanced string technologies into a premium set built for exceptional tone, longevity, and playability. Developed in collaboration with six‑time GRAMMY® winner Jason Isbell, this Artist Light gauge set uses a more traditional SP® core to match the feel and tonal character behind Isbell’s signature acoustic sound.

Era strings use a patented Lifespan® treatment to protect against corrosion without compromising the natural feel or tone of phosphor bronze. Their Flexible Core construction offers improved fretability, reduced finger fatigue, and enhanced overall comfort—ideal for players who want rich, expressive tone with a smooth, responsive feel. Silk‑wrapped ball ends pay homage to Martin’s handcrafted string‑making tradition, offering extra protection for vintage instruments and adding a refined finishing touch.

With their blend of durability, clarity, and comfort, Martin Era Artist Light strings deliver a powerful and musical experience for modern players and fans of Jason Isbell’s iconic acoustic sound.

Key Features

• Developed with 6‑time GRAMMY® winner Jason Isbell
• Artist Light gauge with traditional SP® core for his signature tone
• Patented Lifespan® treatment for long‑lasting corrosion resistance
• Flexible Core for enhanced playability and reduced finger fatigue
• Silk‑wrapped ball ends ideal for protecting vintage bridges and adding premium detail
• Premium phosphor bronze tone with rich lows, balanced mids, and clear highs