Unlock the hidden tone of your acoustic guitar with Martin Retro strings, wrapped in Martin's proprietary Monel formulation. Previously unavailable since the 1960s, Monel is a blend of solid Nickel and Copper which accentuates the pure tone of the note, and helps to bring out the 'tonewood' sound of the guitar. Favoured by folk and bluegrass musicians for many years, Monel strings have become the go-to string for players of premium acoustic guitars across many style and genres. Experience the Martin Retro difference at Echo Tone today,
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