Martin Authentic Acoustic Flexible Core Phosphor Bronze Guitar Strings

Martin Authentic Acoustic Flexible Core Phosphor Bronze Guitar Strings 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. That’s why we make our own. String Gauges & Tension Gauge E B G D A E Tension Model Silk & Phosphor Custom .011 .013 .023 .028 .038 .047 128 MA130FX Phosphor Bronze Custom Light .011 .015 .023 .032 .042 .052 155.1 MA535FX Medium .013 .017 .026 .035 .045 .056 190.4 MA550FX Extra Light 12-String .010/.010 .014/.014 .025/.010 .032/.012 .042/.018 .054/.027 282.6 MA500FX Light Tommy Emmanuel .012 .016 .025 .032 .042 .054 168.7 MA540FX