Detail 01
Medium 13-17-26-35-45-56 gauge
This set is configured as Martin’s medium-gauge MA550 option.
Product detailSKU #1500000223119
MartinMA550 SP Authentic Acoustic Phosphor Bronze Guitar Strings - Medium (13-56)
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Independent shopping perspective
The Korena take
MA550 SP is the medium-gauge member of Martin’s Authentic Acoustic phosphor bronze range, with a 13-56 set of 92/8 phosphor bronze strings. The high-tensile cores receive tin plating on every string for added corrosion resistance, and the wrap wire is part of Martin’s consistent-tone design. It is a straightforward replacement choice for players specifically looking for the listed medium gauge rather than a lighter set.
Strong match
Who this is for
- Replacing an acoustic guitar with Martin’s listed 13-56 medium-gauge phosphor bronze set.
- Practice and performance use where corrosion resistance, consistent tone, and tuning stability are desired.
Consider the trade-offs
When to look elsewhere
- Players seeking a lighter gauge than the MA550’s 13-17-26-35-45-56 medium set.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
92/8 phosphor bronze
The MA550 is identified as a 92/8 phosphor bronze string set.
Detail 03
Tin-plated cores on six strings
Every core wire is plated for added corrosion resistance.
Final check
Know before you order
- 01Confirm that the 13-56 medium gauge is the set you intend to install.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What gauge is the MA550 SP set?
It is a medium set: 13-17-26-35-45-56.
02Are the MA550 cores corrosion resistant?
Martin tin-plates all six high-tensile core wires for added corrosion resistance.
