Martin Phosphor Acoustic Guitar Strings Martin Strings are high quality strings for daily use. Core and wrap wires must meet strict requirements in order to make the grade. Martin Strings are wound to precise specifications.
Martin Phosphor Acoustic Guitar Strings
Individual Gauges
- Extra Light (M530); .010, .014, .023, .030, .039, .047
- Light (M540); .012, .016, .025, .032, .042, .054
- Medium (M550); .013, .017, .026, .035, .045, .056
