The Martin MA535 Authentic Acoustic SP guitar strings bring musicians a bulk pack of 12 sets for convenient and affordable string changes. With the MA535's proprietary SP phosphor bronze wrap wire over a high tensile core, guitarists will appreciate the strings' balanced warmth and brightness. The custom light gauge offers comfortable playability. And the SP core wire provides longer-lasting tone and tuning stability over traditional strings.

Keep Your Tone Consistent With SP Core Wire

The MA535 acoustic guitar strings feature Martin's special SP core wire. This high tensile steel wire enables the strings to hold their tune better. Even during long gigs or practice sessions, you can rely on these strings to deliver consistent tone and intonation. The SP core also allows the strings' tone to mature gracefully over time instead of the less desirable sharp drop-off. Your guitar's voice will sing with richness and resonance thanks to the MA535's innovative core wire.