Excellent Tuning Stability | Corrosion Resistant, Tin-Plated Core | Professional Playability

Martin Authentic Acoustic Studio Performance (SP) strings are engineered with the performer in mind, and they will always stand up to rigorous practice and performance schedules. The core is Martin's highest tensile-strength which is then tin-plated for corrosion resistance (including the non-wounds). The cores are then wrapped with Martin's highest quality 92/8 Phosphor Bronze wire which consistently delivers a warm, full and balanced tone.

Instrument 6-String Acoustic Guitar
Gauge Range 12 - 54
Gauges 12 , 16 , 25w , 32 , 42 , 54 (wound 3rd)
Tension 168.5 lbs
Wrap Material 92/8 Phosphor Bronze
Construction Round Wound
Hex Core / Round Core Tin-Plated Steel Hex Core
Ball End / Loop End Ball End
Coated / Non-Coated Non Coated

Martin Acoustic Light 12 - MA540