Martin Authentic Acoustic SP® Guitar Strings Phosphor Bronze - (MA550) Medium 13-56 Tenor · Effects: Reverb

· Effects: Reverb

balanced with comfortable playability

delivers vintage-inspired tone and sustain

increased low end

crystal-clear clean tones that Fender aficionados know and love at higher volumes

Martin Authentic Acoustic SP® Guitar Strings Phosphor Bronze - (MA550) Medium 13-56 Tenor · Effects: ReverbMartin 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.