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 EARTHWOOD ROCK & BLUES 10-52
GROVER GP150 TRUSS-ROD ADJUSTMENT GIBSON
ERNIE BALL EARTHWOOD MEDIUM LIGHT 12-54
ERNIE BALL COATED BRONZE ACOUSTIC 13-56
ERNIE BALL EARTHWOOD SILK&STEEL 13-56
DADDARIO HELICORE H410 LM VIOLA STRING SET, LONG SCALE, MEDIUM TENSION
DADDARIO EJ39 