Martin MA540 Authentic Acoustic Superior Performance 92/8 Ph. Bronze Guitar Strings - Light 12-54 buffer Ernie Ball's RPS wound strings

Ernie Ball's RPS wound strings consists of specific gauges and core to wrap ratios for balanced rich harmonics and that signature Slinky feel

and flat alnico 2 rod poles

It has been designed for hands-free applications in sound reinforcement systems and for use by professional musicians

Manufactured from polycarbonate

Martin MA540 Authentic Acoustic Superior Performance 92/8 Ph. Bronze Guitar Strings - Light 12-54 buffer Ernie Ball's RPS wound stringsMartin 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.