Martin Strings Phosphor Bronze Acoustic Strings Medium 13-56

This is a set of new phosphor bronze, medium gauge (13-56) strings for a 6-string acoustic guitar, claimed to provide a balanced tone.

• The description claims higher tensile strength and tin-plated core wire enable a fuller and more balanced tone.
• The description claims quicker response and increased tuning stability.
• The description claims the strings are designed to meet impeccable standards for acoustic guitar tone.