Martin® Authentic Acoustic® Superior Performance SP® strings feature higher tensile strength and tin-plated core wire on all six strings that enable a fuller and more balanced tone, quicker response and increased tuning stability. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That’s why we make our own.
- Guitar Type: Acoustic Guitar
- Number of Strings: 6
- Coated: No
- Gauges: .0115, .014, .023, .028, .038, .047
- Core Material: Tin-plated Steel
- Winding Material: Silk & Steel
- Winding Type: Round

ERNIE BALL 5-STRING POWER SLINKY 50-135
ERNIE BALL EARTHWOOD PHOSPHOR BRONZE ACOUSTIC 13-56
DADDARIO EJ39
DADDARIO EJ12 80/20 BRONZE
DADDARIO EZ910 85/15 BRONZE
DADDARIO EJ11 80/20 BRONZE
ERNIE BALL .050 WOUND SINGLE STRING
DADDARIO EZ900 85/15 BRONZE
ERNIE BALL EARTHWOOD PHOSPHOR BRONZE ACOUSTIC 12-54
DADDARIO EJ40 SILK & STEEL
DADDARIO EJ17 PHOSPHOR BRONZE 