Martin Authentic Acoustic SP Silk & Steel Custom 11½-47


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Designed to cope with demanding practices and schedules. Martin Authentic Acoustic SP Silk & Steel strings feature their highest tensile-strength core wire, and are tin-plated for enhanced corrosion resistance. These Silk and Steel strings deliver consistent quality and tone, with a centre wrap of silk fiber providing a smooth feel.
Steel strings are ideal for classical and folk styles, due to its crisp and bright tone. You can rely on Martin strings to provide great performance and long life without breaking the bank. These Acoustic SP strings include gauge 11.5-14-23-28-38-47.


  • Set of 6 strings
  • Custom gauge 11 1/2 - 47
  • Consistent quality and tone
  • Extremely soft to the touch, perfect for players of all skill levels
  • Smooth feel for great playability
  • Tin plating offers added corrosion resistance


  • Gauges: 11.5-14-23-28-38-47
  • Tension: 122.2
Shipping Information

Our on-line store is open 24/7 and we ship Monday through Friday, excluding bank holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 2:00 p.m. GMT Orders in high demand will have an estimated production time listed on its product page and will ship once we havevtaken delivery. Please contact us for estimated delivery on out of stock items.

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