Pricing and availability

We compare 600+ stores and found this item at 7 stores. Prices updated .

Sweetwater
4.5 (5)
$6.49
Amazon
4.6 (3798)
$6.49
Reverb
$5.99 New
$99.99 Used
Thomann
4.5 (47)
$5.70 $5.60 $0.10 · All time low

Price History

Based on price data from 5 merchants for "Martin & Co. M140 80/20 Bronze Acoustic Guitar Strings Light". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Elevate your acoustic guitar's tonal palette with the Martin & Co. M140 80/20 Bronze Acoustic Guitar Strings. Crafted for musicians who demand both quality and versatility, these strings deliver a rich, resonant low end paired with crisp, clear trebles that will make your music shine. Whether you're strumming a classic folk tune or fingerpicking a blues riff, the M140s bring out the natural voice of your instrument, giving you an expressive, dynamic sound.

The 80/20 bronze alloy composition ensures durability while offering a delightful balance of warmth and brightness that suits a variety of genres—from rock and country to bluegrass and beyond. Designed for daily use, these light gauge strings (.012-.054) provide the perfect tension for comfortable playability without sacrificing tone. Ideal for both stage and studio, they are beloved by both professional musicians and hobbyists alike, standing as a testament to Martin's legacy of craftsmanship and precision.

Key Features:

  • Material: 80/20 bronze for a balanced blend of warmth and brightness
  • Gauges: .012, .016, .025, .032, .042, .054
  • Perfect for a wide range of genres including rock, folk, blues, and more
  • Offers a rich low end with clear, bright trebles
  • Suitable for both flatpicking and fingerpicking styles
  • Durable construction for long-lasting performance

Product specs

Guitar Type Acoustic Guitar
Number of Strings 6
Coated No
Gauges .012, .016, .025, .032, .042, .054
Core Material Steel
Winding Material 80/20 Bronze
Winding Type Round

FAQs

What are the tonal characteristics of Martin & Co. M140 80/20 Bronze Acoustic Guitar Strings?

Martin & Co. M140 strings offer a bright and resonant tone, ideal for fingerpicking styles. The 80/20 bronze composition, with 80% copper and 20% zinc, enhances the brightness and clarity of your acoustic guitar.

Are Martin & Co. M140 strings suitable for beginners?

Yes, the light-gauge of Martin & Co. M140 strings (.012-.054) makes them easier to press down, which is beneficial for beginners. They provide a light, crisp, and clean tone that suits various playing styles.

How do Martin & Co. M140 strings differ from phosphor bronze strings?

Martin & Co. M140 strings are made from 80/20 bronze, offering a brighter and more resonant sound compared to phosphor bronze strings, which have a warmer and fuller tonal quality.

Do Martin & Co. M140 strings have a coating?

No, Martin & Co. M140 strings are not coated. This can result in a more natural tone but may require more frequent changes compared to coated strings.

What is the string composition of Martin & Co. M140?

Martin & Co. M140 strings have a steel core and are wound with 80/20 bronze, providing a bright and resonant sound that enhances the natural tone of acoustic guitars.

Reviews

PROS

  • Excellent for both fingerpicking and strumming, offering great versatility.

  • Provides a bright, chime-like sound with impressive volume and clarity.

  • Soft on fingers with minimal tension, ideal for fingerstyle players.

  • Durable and long-lasting, even with frequent use.

  • Reliable and strong for live performances, minimizing breakage.

  • Affordable pricing for high-quality strings, offering great value.

  • Enhances the sound of budget guitars, providing a richer tone.

  • Individually packaged, convenient for quick string replacements on stage.

  • Produces bell-like harmonics with incredible sustain.

  • Maintains tuning stability over time.

CONS

  • Bright tone may not suit those preferring a mellow sound.

  • Different feel for those transitioning from nylon strings.

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Martin & Co. M140 80/20 Bronze Acoustic Guitar Strings Light.

Comparisons

  • Martin SP 80/20 Bronze strings noted for brightening and taming overtones on a Martin D-28 with forward-shifted bracing.

    Source

Use cases and applications

  • Martin M140 80/20 Bronze Light strings preferred for Super Jumbo guitars to enhance brightness due to their natural low-end emphasis.

    Source

User experience

  • Users with humid climates recommend coated strings to prevent corrosion, although noting the increased cost.

    Source

Value and pricing

  • Martin M140 80/20 Bronze Light strings are described as "cheapish," suggesting affordability alongside their tonal qualities.

    Source

Features and functionality

  • 80/20 strings are highlighted for their emphasis on treble, making them suitable for guitars with rich low-end or darker tones.

    Source

5.0 out of 5

Based on 1 Review and 4 Ratings

5 star
4 star
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2 star
1 star
skylinerr

the best

I only really ever used ernies coated acoustic strings untill i got a j45 with these on I had to ring the previous owner and ask what his amazing strings were!

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