Martin Retro MM12 Light Acoustic Guitar Strings
- Monel nickel wrap on a tin-plated steel core
- Light gauge, 6 strings
- Warm, mellow, balanced, vintage sound
- Coated per the listing
- Fingerstyle blues, Americana, country, bluegrass, ragtime named as uses
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A light gauge set of Monel-wrapped strings voiced warm and vintage for roots styles. The warranty field reads not applicable, and no individual gauges are given.
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ASIN: B00JQZS4HGCategory: Acoustic Guitar Strings
Sizes Available
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Overview
Martin makes the Retro MM12 as a six-string acoustic set wound with Monel wire over a tin-plated steel core. The nickel-copper alloy gives it a vintage character, and the set is aimed at fingerstyle and roots playing.
The listing sells a mellow, balanced voice with a vintage flavor, and names the styles it suits, from blues to ragtime. The gaps are practical, with no gauge breakdown, no weight and no warranty.
Who it's for
Players of blues, Americana, country, bluegrass and ragtime on acoustic who want a mellow set. Heavy strummers chasing sparkle should look for a brighter set, since this one is described as mellow.
Pros and cons
- Monel wrap on tin-plated steel core
- Warm, mellow, vintage voice
- Styles it suits are named
- Coated per listing
- Individual gauges not listed
- Warranty entry reads Na
- Coating type not described
Performance notes
Monel is a nickel-copper alloy, and wrapped on that core it produces the warm, balanced, vintage sound listed. Light gauge governs tension and feel. The listing says coated but never names the coating.
Specifications
| Brand | Martin |
|---|---|
| Construction & materials | |
| String Material Type | Nickel (Monel) |
| Coating Description | Coated |
| Included components | |
| Included Components | 6 guitar strings |
| Other details | |
| String Gauge | Light |
| Set Name | MM12 |
| Recommended Uses For Product | Acoustic music, fingerstyle blues, Americana, country, bluegrass, ragtime |
| Sound Profile | Warm, mellow, balanced, vintage |
| Core | Tin-plated steel |
Frequently asked questions
How do I look after the Martin Retro MM12 strings?
The listing says coated but gives no care or cleaning guidance, so follow the maker's advice.
Are Martin Retro MM12 strings for electric guitars?
No. The listing names acoustic guitar as the instrument.
How many strings are in the Martin MM12 pack?
The included components entry lists six guitar strings, which is one set.