---
product_id: 255692556
title: "Martin MA550 Authentic Acoustic - SP - Phosphor Bronze Medium(13-56)"
brand: "martin"
price: "137 kr"
currency: DKK
in_stock: true
reviews_count: 5
category: "Martin"
url: https://www.desertcart.dk/products/255692556-martin-ma550-authentic-acoustic-sp-phosphor-bronze-medium-13-56
store_origin: DK
region: Denmark
---

# Tin-plated for corrosion resistance Medium gauge 13-56 for balanced tone High tensile-strength core wire Martin MA550 Authentic Acoustic - SP - Phosphor Bronze Medium(13-56)

**Brand:** martin
**Price:** 137 kr
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound, own the stage with Martin Authentic Acoustic Strings!

## Quick Answers

- **What is this?** Martin MA550 Authentic Acoustic - SP - Phosphor Bronze Medium(13-56) by martin
- **How much does it cost?** 137 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/255692556-martin-ma550-authentic-acoustic-sp-phosphor-bronze-medium-13-56)

## Best For

- martin enthusiasts

## Why This Product

- Trusted martin brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Playability:** Ideal for fingerpicking, flatpicking, and every style in between.
- • **Bright & Balanced Tone:** Unlock your guitar’s true voice with phosphor bronze clarity.
- • **Pro-Grade Craftsmanship:** Martin’s precision manufacturing ensures premium sound quality every time.
- • **Rock-Solid Tuning Stability:** High tensile core wire keeps you in perfect pitch, gig after gig.
- • **Durability Meets Performance:** Tin-plated strings resist corrosion for longer-lasting brilliance.

## Overview

Martin MA550 Authentic Acoustic Strings (Phosphor Bronze Medium 13-56) deliver bright, rich tones with exceptional tuning stability thanks to their high tensile-strength core and corrosion-resistant tin plating. Engineered for versatile playing styles and crafted with professional-grade precision, these strings are the trusted choice for musicians seeking durability and superior sound quality.

## Description

Martin Authentic Acoustic Superior Performance SP strings feature higher tensile strength and tin-plated core wire on all six strings that enable a fuller and more balanced tone, quicker response and increased tuning stability. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That's why we make our own.

Review: Melhores cordas possíveis. Oferece uma qualidade de som distinta de outras marcas
Review: Las uso en una little martin, en calibre 13-16 y me encantan, son el minimo indispensable para el sonido que a mí me gusta!

## Features

- BRIGHT TONES: Martin Authentic Acoustic Strings provide excellent tuning stability and playability with bright and rich tones. Discover your guitar's true voice with this professional-grade guitar string pack.
- SUPERIOR STRINGS: These strings are engineered to thrive during rigorous practice and performance schedules. These silk and steel folk strings feature our highest tensile-strength core wire paired with quality wrap wire for corrosion resistance and tuning stability.
- VERSATILE STRING SOUNDS: Designed to bring out a consistent and true tone from your guitar, these guitar strings can be used for fingerpicking, flat picking, and other methods. Use these strings in any genre—country, bluegrass, folk, blues, rock, and more.
- MEDIUM ACOUSTIC STRINGS: Measuring from a 0.013" high E string to a 0.056" low E string, these are high-quality acoustic guitar strings that brighten the natural tuning of your guitar, including tenor, mid-tones, and bass. They feature a tension of 190.9.
- AUTHENTIC ACOUSTIC: With Martin Authentic Acoustic, you get a set of strings designed for performance and playability. Martin guitars and accessories remain the choice for musicians around the world for their unrivaled quality, craftsmanship, and tone.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07GTGW6H6 |
| Body Material | Phosphor Bronze |
| Color Name | Phosphor Bronze Medium 13-56 |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,346) |
| Date First Available | 2 October 2018 |
| Item Weight | 30 g |
| Item model number | 41Y18MA550 |
| Material Type | Phosphor Bronze |
| Number of Strings | 6 |
| Product Dimensions | 12 x 15 x 12 cm; 30 g |
| Size | Medium ( 13-56 ) |
| String Gauge | Medium |
| String Material | Phosphor Bronze |

## Product Details

- **Brand:** Martin
- **Colour:** Phosphor Bronze Medium 13-56
- **Instrument:** Acoustic Guitar
- **String gauge:** Medium
- **String material type:** Phosphor Bronze

## Images

![Martin MA550 Authentic Acoustic - SP - Phosphor Bronze Medium(13-56) - Image 1](https://m.media-amazon.com/images/I/71aomgT41kL.jpg)

## Questions & Answers

**Q: What does string gauge even mean?**
A: Gauge refers to the diameter of a string. Gauges are described in thousandths of an inch and can be found listed on the back of a string pack. Overall, string gauges are classified as: Extra light, Custom light, Light, Medium and Heavy

**Q: What is your experience Level?**
A: Lighter - Easier to fret (important for beginners) and to bend. Better resonance under a lighter touch, common when first starting out. Heavier- Bigger sound provide more volume and resonance. Better tuning stability tays in tune longer.

**Q: Consider the body size of your guitar.**
A: Lighter - Exert less tension and are typically recommended for smaller bodied guitars such as 0, 00, 000, and OM, plus all cutaway models Heavier - Exert more tension and are typically recommended for larger body sizes

**Q: What style of music do you play?**
A: Lighter - Good choice for rock, folk, country, and blues style playing with a lighter attack (plucking) Heavier - Good choice for rock, country, and blues style playing with a harder attack

**Q: What sound are you going for?**
A: Lighter - Offer appropriate volume and range for playing in an intimate setting. Heavier - Produces more volume and sustain. Great choice if you’re accompanied by other players.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by N***A on 9 December 2025*

Melhores cordas possíveis. Oferece uma qualidade de som distinta de outras marcas

### ⭐⭐⭐⭐⭐ Review
*by E***O on 1 August 2022*

Las uso en una little martin, en calibre 13-16 y me encantan, son el minimo indispensable para el sonido que a mí me gusta!

### ⭐⭐⭐⭐⭐ Review
*by B***. on 21 November 2025*

Excelentes, pelo preço certo compensa demais.

## Frequently Bought Together

- Martin Authentic Acoustic Guitar Strings - Superior Performance
- Martin Authentic Acoustic Guitar Strings, Superior Performance Custom Light 11-52, 80/20 Bronze
- D'Addario Accessories Pro-Winder Guitar String Winder, Cutter, Bridge Pin Puller - All in One Guitar Tool - Black

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**Shop now:** [https://www.desertcart.dk/products/255692556-martin-ma550-authentic-acoustic-sp-phosphor-bronze-medium-13-56](https://www.desertcart.dk/products/255692556-martin-ma550-authentic-acoustic-sp-phosphor-bronze-medium-13-56)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-24*