• Martin Authentic Acoustic guitar string set packaging on a white background
  • Martin Authentic Acoustic guitar string set packaging on a white background
  • Martin Authentic Acoustic guitar string set packaging on a white background
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Martin Authentic Acoustic SP Strings — 80/20 Bronze | Custom Light to Medium

Martin Authentic Acoustic SP Strings — 80/20 Bronze | Custom Light to Medium

MA140

Martin's SP strings combine higher tensile strength with tin-plated core wire for a fuller, more balanced tone, quicker response, and the tuning stability you'd expect from one of the world's most trusted string makers — in four gauges to suit your playing style.

Description

Tone, Stability, and Playability — Martin Authentic Acoustic SP Strings

Martin's Authentic Acoustic SP strings are built to the same exacting standards that have made Martin one of the most respected names in acoustic guitar. The 80/20 Bronze winding delivers a bright, clear tone with excellent projection — the classic acoustic string sound that suits fingerpicking, strumming, and everything in between.

SP (Superior Performance) strings feature higher tensile strength and tin-plated core wire on all six strings, resulting in a fuller, more balanced tone, quicker response, and improved tuning stability. Whether you're recording, gigging, or practising, these strings hold their tone and stay in tune longer than standard strings.

Available in three gauges — Custom Light (11/52), Light (12/54), and Medium (13/56) — select your preferred gauge from the options above.

Features & Specs

  • Brand: Martin
  • Series: Authentic Acoustic SP (Superior Performance)
  • Material: 80/20 Bronze
  • Core: Tin-plated high tensile strength wire
  • Compatible instrument: Acoustic guitar

Variants & gauges:

  • Custom Light — 11-15-23-32-42-52 — SKU: MA175
  • Light — 12-16-25-32-42-54 — SKU: MA140
  • Medium — 13-17-26-35-45-56 — SKU: MA150

    £9.99 GBP
    £9.99 GBP
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    Returns

    Returns are accepted within 14 days if unused, in original condition with tags and packaging—contact us for a return code.

    No returns on microphones, in-ear earphones, or other items that touch the mouth, nose, or inner ear due to health and safety reasons, nor on custom orders or opened software.

    Refunds are processed within 1–3 working days.

    For full details, please review our complete return and refund policy policies.

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