If you play a 12-string acoustic, you know the challenge: keeping all those strings in tune, managing the tension, and finding a set that holds up over time. The Martin MA500 SP Authentic Acoustic strings are built specifically for 12-string guitars, giving you a complete 12-string set in an extra-light gauge (.010–.047 on the primary strings) that's easier on your fingers and your top while still delivering a full, balanced sound.
The core is tin-plated high-tensile-strength steel — the tin plating adds a layer of corrosion resistance from the inside out. The wrap wire is 92/8 phosphor bronze (92% copper, 8% tin), wound round, which gives acoustic strings a warm, balanced character with good projection. The "SP" stands for Superior Performance, Martin's designation for this line within their Authentic Acoustic family.
These are uncoated strings, so they won't feel slippery or muffled like coated sets — just straightforward phosphor bronze response. The extra-light gauge makes them well-suited for players who want reduced string tension on their 12-string, whether for comfort or to be kinder to vintage or lighter-built instruments.
Product Features:
- 12-string acoustic guitar string set, extra light gauge
- Primary gauges: .010/.010, .014/.014, .023w/.010, .030w/.012, .039w/.018, .047w/.027
- 92/8 phosphor bronze round-wound wrap wire
- Tin-plated high-tensile-strength steel core on all six primary strings
- Uncoated construction for natural acoustic response
- Martin Authentic Acoustic SP (Superior Performance) series
Brand: Martin
Model: MA500 SP Authentic Acoustic 12-String
SKU: MA500
Condition: New
Since 1872, C.A. House Music has been helping musicians across the Ohio Valley find the right gear -- with real advice from a team that actually plays. We're your authorized dealer of all the big names in guitars, keyboards, band instruments, drums, pro audio, and more. With four family-owned and operated locations in Ohio and West Virginia (plus a full online store), you don't have to go far for instruments, lessons, rentals, and repairs. No matter your musical needs, our team of musicians wants to help you Play Music for Life.
