Martin Strings, AuthAcoustic 550FX Phos, 6Stg, Med

A Dad Favorite!

Martin Authentic Acoustic Flexible Core strings are designed to reduce finger fatigue and allow huge bends. They feature a lighter gauge version of our Superior Performance core wire combined with heavier wrap wire to deliver a full and balanced tone with increased flex and playability. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process.