LUXE BY MARTIN® Kovar™ strings are where innovation meets performance, for the player who knows exactly what they want from their acoustic guitar strings. Crafted with our high-tensile Superior Performance SP® core wrapped in Kovar, a nickel-cobalt alloy, these strings are aimed at providing crystalline clarity and a tone so balanced it will make your heart sing. These strings aren't just for show. They are made for the player who demands precision and power in equal measure. That is why we designed them with lower tension—not as a compromise, but as a conscious choice to enhance your technical prowess. So go ahead, dig deep—these strings can take it. And durability? Kovar strings feature natural corrosion resistance, which means these strings will be with you for the long haul, sounding as good as the day you put them on. Ready to take your playing to the next level? When it comes to the art of crafting acoustic guitar strings, we don't just meet the standards—we set them.