As the name suggests, the Martin Authentic Acoustic Superior Performance strings are designed with the performing guitarist in mind. The core wire is the highest tensile-strength Martin has and each string is tin-plated for corrosion resistance. This combo makes these strings durable and will give you peace of mind when you're on the live stage. The strength of these strings does not come at the cost of tone as Martin use their highest quality wrap wire to finish off these strings. Consistent and reliable, these strings will impress night after night.
.013, .017, .026, .035, .045, .056