---
product_id: 143106248
title: "MA550 Authentic Acoustic - SP - Phosphor Bronze Medium( 13-56 )"
brand: "martin"
price: "¥3976"
currency: JPY
in_stock: true
reviews_count: 13
category: "Martin"
url: https://www.desertcart.jp/products/143106248-ma550-authentic-acoustic-sp-phosphor-bronze-medium-13-56
store_origin: JP
region: Japan
---

# Phosphor bronze for bright, rich sound Medium gauge 13-56 for balanced tone High tensile-strength core wire MA550 Authentic Acoustic - SP - Phosphor Bronze Medium( 13-56 )

**Brand:** martin
**Price:** ¥3976
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound, own the stage—strings that speak your style.

## Quick Answers

- **What is this?** MA550 Authentic Acoustic - SP - Phosphor Bronze Medium( 13-56 ) by martin
- **How much does it cost?** ¥3976 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/143106248-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

- • **Medium Gauge Power:** Balanced tension (190.9) offers a dynamic range from crisp highs to full-bodied bass, ideal for pros.
- • **Versatile Playability:** Perfect for fingerpicking, flatpicking, and every genre from folk to rock—your all-in-one string solution.
- • **Unmatched Tuning Stability:** Stay performance-ready with strings engineered to hold pitch through intense practice and gigs.
- • **Bright & Rich Tonal Clarity:** Phosphor bronze wrap delivers sparkling highs and warm mids that reveal your guitar’s true voice.
- • **Durability Meets Craftsmanship:** Silk and steel blend with corrosion-resistant wrap ensures longevity without sacrificing tone.

## Overview

Martin MA550 Authentic Acoustic Strings (13-56) feature phosphor bronze medium gauge construction with a high tensile-strength core wire, delivering bright, rich tones and exceptional tuning stability. Designed for versatile play across genres, these 6-string sets combine durability and professional-grade performance to unlock your guitar’s full sonic potential.

## Description

Buy Martin MA550 Authentic Acoustic - SP - Phosphor Bronze Medium( 13-56 ). Free delivery and returns on eligible orders.

Review: The best strings? - I have a Martin D28 guitar, so maybe I’m biased, but these are the best strings for that and my other acoustic guitar (a Takamine). I’ve had these on for over a month and am recording an album, but they still sound bright and resonant.
Review: Guitar Strings - Excellent strings, will buy again.

## 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 |
| Best Sellers Rank | 87 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 15 in Guitar Strings |
| Brand Name | MARTIN |
| Coating Description | Uncoated |
| Colour | Phosphor Bronze Medium 13-56 |
| Country of Origin | Mexico |
| Customer Reviews | 4.6 4.6 out of 5 stars (10,711) |
| Finish Type | Bronze Plated |
| Global Trade Identification Number | 00729789557870 |
| Included Components | Guitar Strings (.013, .017, .026, .035, .045, .056) |
| Instrument | Acoustic Guitar |
| Item Type Name | Acoustic Guitar Strings |
| Item Weight | 30 Grams |
| Manufacturer | C.F. Martin & Co. |
| Manufacturer Part Number | 41Y18MA550 |
| Material Type | Phosphor Bronze |
| Model Number | 41Y18MA550 |
| Product Warranty | 1. |
| Recommended Uses For Product | Musical performance |
| String Gauge | Medium |
| String Material Type | Phosphor Bronze |
| UPC | 729789557870 |
| Unit Count | 6 count |

## Product Details

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

## Images

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

## Available Options

This product comes in different **Configuration, Size, Style** options.

## 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

### ⭐⭐⭐⭐⭐ The best strings?
*by J***Y on 22 December 2025*

I have a Martin D28 guitar, so maybe I’m biased, but these are the best strings for that and my other acoustic guitar (a Takamine). I’ve had these on for over a month and am recording an album, but they still sound bright and resonant.

### ⭐⭐⭐⭐⭐ Guitar Strings
*by D***N on 12 April 2026*

Excellent strings, will buy again.

### ⭐⭐⭐⭐ Love them for the price
*by J***D on 7 October 2025*

I tried too many brands and I keep coming back to Martin strings. Last little longer than other strings and price is ok.

## 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.jp/products/143106248-ma550-authentic-acoustic-sp-phosphor-bronze-medium-13-56](https://www.desertcart.jp/products/143106248-ma550-authentic-acoustic-sp-phosphor-bronze-medium-13-56)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-08*