Martin Authentic SP Phosphor Bronze Acoustic Guitar Strings

zZounds Gear Experts Say...
Get excellent tuning stability, corrosion resistance and playability for your go-to acoustic with these Martin Authentic SP Phosphor Bronze acoustic strings.

These strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules. Martin starts with the highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistance; because what you don't see matters! When coupled with their highest quality wrap wire you get consistent true tone that you can count on song after song.

Get an overview of Martin Authentic Acoustic strings:


Martin Authentic SP Phosphor Bronze Acoustic Guitar Strings offer excellent tuning stability, corrosion resistance and great playability.
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.

Extra Light 6-String
- Gauge: 10-14-23-30-39-47

Custom Light 6-String
- Gauge: 11-15-23-32-42-52

Light 6-String
- Gauge: 12-16-25-32-42-54

Medium 6-String
- Gauge: 13-17-26-35-45-56

Light/Medium 6-String
- Gauge: 12.5-16.5-25.5-33.5-43.5-55

Dimensions and Weight in Packaging

Custom Light, MA535

  • Shipping Weight: 0.09 lbs
  • Shipping Dimensions: 6 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA535

Extra Light, MA530

  • Shipping Weight: 0.08 lbs
  • Shipping Dimensions: 6 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA530

Light, MA540

  • Shipping Weight: 0.09 lbs
  • Shipping Dimensions: 6 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA540

Light/Medium, MA545

  • Shipping Weight: 0.09 lbs
  • Shipping Dimensions: 5 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA545

Medium, MA550

  • Shipping Weight: 0.09 lbs
  • Shipping Dimensions: 6 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA550

3-Pack, MA535

  • Shipping Weight: 0.26 lbs

3-Pack, Light, MA540

  • Shipping Weight: 0.25 lbs
  • Shipping Dimensions: 6 x 5 x 2 in
  • Manufacturer Part Number (MPN): 41Y18MA540PK3

3-Pack, Medium, MA550

  • Shipping Weight: 0.31 lbs
  • Shipping Dimensions: 6 x 6 x 2 in
  • Manufacturer Part Number (MPN): 41Y18MA550PK3

25-Pack, Custom Light, MA535

  • Shipping Weight: 2 lbs
  • Shipping Dimensions: 9 x 8 x 5 in
  • Manufacturer Part Number (MPN): 41BULKBOXMA535

25-Pack, Light, MA540

  • Shipping Weight: 2.25 lbs
  • Shipping Dimensions: 9 x 8 x 5 in
  • Manufacturer Part Number (MPN): 41BULKBOXMA540

25-Pack, Medium, MA550

  • Shipping Weight: 2.25 lbs
  • Shipping Dimensions: 9 x 8 x 5 in
  • Manufacturer Part Number (MPN): 41BULKBOXMA550

For support or warranty questions, please contact the manufacturer:
Phone: 610-759-2837
Web: https://www.martinguitar.com/contact-us

Martin Authentic SP

These strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules. Martin starts with the highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistance; because what you don't see matters! When coupled with their highest quality wrap wire you get consistent true tone that you can count on song after song.

Martin Authentic SP Phosphor Bronze Acoustic Guitar Strings offer excellent tuning stability, corrosion resistance and great playability.

Custom Light, MA535

$7.99
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