Martin MA190 Authentic Acoustic SP Guitar Strings 12-String 80/20 Bronze Light 12-54 BCT-TUNER the physical design features rounded

the physical design features rounded edges for enhanced ergonomic comfort when using the pickup as a thumb rest

The Arrow-1000NT stands for “non-tremolo”

super-cardioid

The American Pro II Jazz Bass delivers instant familiarity and sonic versatility you’ll feel and hear right away

Martin MA190 Authentic Acoustic SP Guitar Strings 12-String 80/20 Bronze Light 12-54 BCT-TUNER the physical design features roundedProduct Information Martin Authentic Acoustic Superior Performance SP strings feature higher tensile strength and tin plated core wire on all six strings that enable a fuller and more balanced tone, quicker response and increased tuning stability. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That's why we make our own. Specifications Gauge E B G D A E Tension Model Light . 012