C.F. Martin & Co MA190 AUTHENTIC SP LIGHT 80/20 BRONZE -LIGHT 12-16-25-32-42-54 12 STRINGS
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What you need to know
What you need to know
- Set designed for 12-string acoustic guitar : Light gauge ideal for maintaining comfort under the fingers
- 80/20 Bronze Alloy : precise attack, natural brightness, and strong presence in the mix
- Anti-corrosion treatment : tin plating on the 6 strings for better oxidation resistance
- Consistent sound over time : robust core and quality winding to play through songs without loss of character
Manufacturer Information
Martin Strings
https://www.martinguitar.com
customerservice@martinguitar.com
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The "Authentic" Tone: Clarity, Projection, and Balance on 12 Strings
With the Martin Authentic Acoustic MA190, you get a dynamic response designed for demanding guitarists: defined lows, clear mids, and singing highs, even on a 12-string where balance can quickly become tricky. The 80/20 Bronze alloy emphasizes clarity and projection, perfect for arpeggio playing, bright rhythms, or precise picking.
The Light gauge promotes a smooth playing feel and good control of dynamics, while maintaining the necessary tension for stable intonation and a consistent sound across the string courses. Thanks to the tin plating on the 6 strings (the ones most exposed to corrosion), the feel remains more consistent and the tone retains its freshness longer, repetition after repetition.
Technical specifications
| Tension | Soft | 1st cord pull | 12 |
| Type of cord attachment | Ball end | Nbr of strings | 6 |
| Category | acoustic | Material | 80/20 bronze |
| Classification | Extra light | Special feature | 12-string |
| Draw | 12/12-16/16-25/10-32/15-42/22-54/30 | ||
| Brand | Martin Strings | Gauge | Light |
| Model | MA190 | Dimensions (gauges) | 12-16-25-32-42-54 |
| Series | Authentic Acoustic | Construction | very strong core |
| Type | string set for acoustic guitar | Corrosion protection | tin plating on the 6 strings |
| Number of strings | 12 | Winding | high-quality winding for consistent sound over time |
| Alloy | 80/20 Bronze | Other versions indicated by the manufacturer | available in 80/20 Bronze and 92/8 Phosphor Bronze |
Questions frequently asked
Are these strings suitable for a 12-string guitar?
The MA190 set is designed for a 12-string acoustic guitar, consisting of six pairs with gauges 12/12, 16/16, 25/10, 32/15, 42/22, and 54/30. This distribution maintains appropriate tension between the main strings and the octave strings.
What is the gauge of the Martin MA190 Authentic SP 80/20 Bronze?
The indicated gauge is 12-16-25-32-42-54 for the six main strings, with the first string being .012. The associated octave strings are .012, .016, .010, .015, .022, and .030.
What sound does the 80/20 bronze deliver on a 12-string guitar?
The 80/20 bronze alloy emphasizes clarity and projection. The tone maintains defined lows, clear mids, and ringing highs.
Are the MA190 strings more resistant to corrosion?
A tin plating is applied to the six strings most exposed to corrosion. This protection aims to preserve a more consistent feel and a fresher tone for a longer time.
Is this set suitable for arpeggios and fingerpicking?
Thanks to the Light gauge and 80/20 bronze, this model promotes dynamic control in arpeggios, bright rhythm playing, and precise fingerpicking.



