Martin MA540FX Authentic Acoustic Flexible Core

Name: Martin MA540FX Authentic Acoustic Flexible Core
Brand: Martin

The Martin MA540FX Authentic Acoustic Flexible Core is a phosphor bronze set, .012–.054 (Light), uncoated. Below you can hear it in five playing styles, recorded on the same guitar, by the same guitarist, in the same take as the other 15 sets on WikiStrings. Press play, then tap any other set: the performance continues from the same point and only the strings change.

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Specifications

Brand	Martin
Model	MA540FX
Series	Authentic Acoustic Flexible Core
Material	Phosphor Bronze
Gauge	.012–.054 (Light)
Coating	Uncoated
Core	Flexible core · Tommy Emmanuel signature
Made in	USA

How to compare it

Start the strings above, let the phrase settle, then switch to another set of the same gauge or the same material: the switch is instant and the music does not restart, so what you hear is the strings, not a different performance. Use the blind test if you want to remove brand bias.