Martin MM13 Retro Acoustic Guitar Strings

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Martin MM13 Retro Acoustic Guitar Strings — Medium Gauge The Martin MM13 Retro strings bring back the original nickel acoustic string formula that dates back to the 1930s, updated with modern winding technology. The wrap wire is solid Monel — a proprietary nickel/copper alloy — not nickel-plated. That distinction matters: because the Monel is solid rather than plated, there's no coating to crack or flake, which means the natural corrosion resistance comes from the material itself, not a surface treatment. The MM13s are a medium gauge set (.013–.056), suited for acoustic guitarists who want more volume and projection than lighter gauges provide. Martin pairs the Monel wrap with a tin-plated hex core wire, which helps prevent galvanic corrosion where the core and wrap wire meet. The result is a string that holds up well over extended playing time while keeping the tonewoods in the conversation — the solid nickel/copper alloy blend is specifically designed to reduce pick attack and let the guitar's natural voice come through. Product Features: 6-string acoustic guitar set, medium gauge: .013 | .017 | .026 | .035 | .045 | .056 Wrap wire: solid Monel (nickel/copper alloy) — not nickel-plated Core wire: tin-plated steel hex core Natural corrosion resistance without coatings Reduced pick attack lets the guitar's tonewoods be heard clearly Compatible with 6-string acoustic guitars; also works well plugged in Brand: Martin Model: MM13 Retro Acoustic Guitar Strings SKU: MM13 Condition: New Since 1872, C.A. House Music has been helping musicians across the Ohio Valley find the right gear -- with real advice from a team that actually plays. We're your authorized dealer of all the big names in guitars, keyboards, band instruments, drums, pro audio, and more. With four family-owned and operated locations in Ohio and West Virginia (plus a full online store), you don't have to go far for instruments, lessons, rentals, and repairs. No matter your musical needs, our team of musicians wants to help you Play Music for Life. Show more