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Guitar Strings

From acoustic to electric, it all starts with the string. Materials include chrome, cobalt, nickel, phosphor, bronze, nylon, silk and steel. Diverse windings, different gauges, crazy colors, cryogenics, and protective coatings are all called upon in the ultimate pursuit of tone, longevity, and well...yeah...looking cool. From eight-string to baritone to classical to straight-ahead rock, AMS has the right set of guitar strings for every player.

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  1. Martin Authentic Acoustic Lifespan 2.0 92/8 Phosphor Bronze Strings

    Martin Authentic Acoustic Lifespan 2.0 92/8 Phosphor Bronze Strings

    $14.99 - $229.99
    Martin Authentic Acoustic Lifespan 2.0 strings offer next generation treatment for long life, great playability and feel, and superior reliability with authentic tone. Martin’s next generation Lifespan 2.0 strings a...

    6 Payments of $38.33

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  2. Martin Original Acoustic Guitar Strings 80/20 Bronze

    Martin Original Acoustic Guitar Strings 80/20 Bronze

    $6.49 - $16.99
    The Martin M140 Originals acoustic guitar strings are designed for players looking for a traditional tone and feel. For generations, Martin has set the standard for acoustic guitar tone and precision manufacturing. ...

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  3. Martin 41Y19MM10 Retro Monel Acoustic Strings

    Martin 41Y19MM10 Retro Monel Acoustic Strings

    $9.99 - $24.99
    The Martin Retro Monels are throwback strings with a tone that works perfectly for fingerstyle players or anyone looking for an old-school tone! Retro strings offer a uniquely mellow, yet crisp sound that allows you...

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  4. Martin MA130S Authentic Acoustic Marquis Silked Silk and Steel Strings

    Martin MA130S Authentic Acoustic Marquis Silked Silk and Steel Strings

    $9.99 - $25.47
    The MA130S Silk and Steel strings are the right choice for you. Martin Authentic Acoustic Marquis Silked strings offer thread wrapping for bridge protection, corrosion resistance and excellent tuning stability. Mart...

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  5. Martin 41Y19MEC Clapton's Choice Signature Acoustic Guitar Strings

    Martin 41Y19MEC Clapton's Choice Signature Acoustic Guitar Strings

    $8.49 - $20.37
    Eric Clapton loves his Martin acoustic guitar strings so much that he wanted to endorse them. We are proud and honored that Martin Guitar makes the strings that Eric trusts to produce his legendary guitar sounds. Wh...

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  6. Martin Authentic Acoustic Marquis Silked 80/20 Bronze Strings

    Martin Authentic Acoustic Marquis Silked 80/20 Bronze Strings

    $8.99
    Martin Authentic Acoustic Marquis Silked 80/20 Bronze strings offer extra protection for your fine guitar. Martin Guitar knows a thing or two about pampering valuable instruments. Martin added a soft silk wrap to th...

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  7. Martin M160 Ball End Nylon Classical Guitar Strings

    Martin M160 Ball End Nylon Classical Guitar Strings

    $8.99
    Martin’s standard Classical string sets have been repackaged with a fresh new look. They offer an easy playing feel, excellent tuning stability and a warm clear tone. These strings are made of crystal nylon and are ...

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  8. Martin Magnifico Tie End Premium Classical Guitar Strings

    Martin Magnifico Tie End Premium Classical Guitar Strings

    $11.99
    Martin’s premium classical strings are tonally superior to nylon and the proprietary synthetic material emulates gut strings that have been around for centuries. Magnifico strings, developed exclusively with Aquila,...

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  9. Martin MA500 Authentic Acoustic SP 92/8 Phosphor Bronze for 12-String Guitar

    Martin MA500 Authentic Acoustic SP 92/8 Phosphor Bronze for 12-String Guitar

    $10.99
    The MA500 92/8 Phosphor Bronze strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules. Martin starts with our highest tensile-strength core wir...

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  10. Martin MA140 Authentic Acoustic SP 80/20 Bronze Acoustic Strings

    Martin MA140 Authentic Acoustic SP 80/20 Bronze Acoustic Strings

    $7.99 - $20.99
    The ultimate in 80/20 bronze acoustic strings, these Martin Authentic Acoustic SP strings are made with Martin’s highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistanc...

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  11. Martin Authentic Acoustic SP 92/8 Phosphor Bronze Acoustic Strings

    Martin Authentic Acoustic SP 92/8 Phosphor Bronze Acoustic Strings

    $7.99 - $128.99
    The Authentic Acoustic SP 92/8 Phosphor Bronze strings strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules. Martin started with their highes...

    6 Payments of $21.50

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  12. Martin Flexible Core Phosphor Bronze Acoustic Strings

    Martin Flexible Core Phosphor Bronze Acoustic Strings

    $8.99 - $21.99
    String bending on an acoustic has never been easier! The Martin Flexible Core strings feel soft to the touch, making them ideal for beginners. But don’t be fooled by comfort! They are for professional players too. J...

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Guitar String: Where Your Tone Really Comes From

When it comes to tone, your strings are make-or-break (sometimes literally). Guitar strings are the first thing your hands touch and the first thing your sound passes through, which means they have a huge say in feel, response, and overall vibe. Change the strings, and the guitar can feel like a different instrument.

American Musical Supply carries guitar strings for every style of player and every type of guitar, from electric and acoustic to bass. You’ll find different gauges for lighter touch or firmer resistance, along with materials and coatings that influence brightness, warmth, and longevity. Whether you’re chasing snap, sustain, or something in between, you'll find top options from Ernie Ball, D’Addario, Elixir, and numerous others right here.

A pack of Elixir Attune acoustic guitar strings.

Choosing the Right String Gauge

String gauge has a big impact on how your guitar feels and responds. Gauges are measured in thousandths of an inch, so a set labeled .009 starts with a high E string that’s nine thousandths thick. Small changes on paper can feel very different under your fingers.

Here’s a general way to think about it:

  • Light gauges feel easy to bend and play, making them popular for fast leads and lighter touch styles
  • Medium gauges balance flexibility and control, offering solid tone without feeling stiff
  • Heavier gauges provide more resistance, fuller tone, and better tuning stability, especially for aggressive playing or lower tunings

Electric guitars have the lowest-gauge strings, followed by acoustic guitars, and finished up with bass. What’s considered “light gauge” for acoustic would be considered medium (at least) for electric.

Your scale length, tuning, and playing style all matter. If bends feel like work, go lighter. If strings feel too loose or thin, stepping up a gauge can tighten things up fast.

How String Types Differ by Guitar

Different guitars ask different things from their strings. Materials, tension, and gauge all change based on how the instrument is built and how it’s meant to be played. Most types of strings can also come coated or uncoated, depending on your preference.

Electric Guitar Strings

Electric strings are usually made from steel cores wrapped in nickel-plated steel, pure nickel, or stainless steel, which allows magnetic pickups to sense their vibration. These tend to be lighter and easier to bend, and they work well with the low-tension feel many electric players prefer.

6- and 12-String Acoustic Guitar Strings

6-string and 12-string acoustic strings are typically steel, wound with phosphor bronze or 80/20 bronze, for rich resonance and volume on a hollow body. Six-string acoustics use steel strings for brightness and projection, and 12-string sets pair each course to create a lush, shimmering chorus effect that’s thicker and fuller overall.

Classical Guitar Strings

Classical guitar strings use nylon strings (with the lower three wound with silver-plated copper or bronze), producing a warmer, softer tone with less neck tension. These are ideal for fingerstyle and classical techniques, and feel much gentler under the fingers than steel strings.

How Often You Should Change Guitar Strings

How often you change guitar strings depends on how much you play, how hard you play, and what kind of tone you expect from your instrument. Here are a few signs it’s time for a change:

  • A dull or lifeless tone that doesn’t brighten up even after tuning
  • Tuning instability where the strings won’t settle in
  • Rough or sticky feel under your fingers
  • Visible corrosion or discoloration along the windings

For casual players, every few months might be fine. Regular gigging or recording often calls for much more frequent changes to keep things sounding right. 

A close-up of someone changing strings on a Yamaha guitar.

Frequently Asked Questions About Guitar Strings

Are coated guitar strings slippery?

Some feel smoother than uncoated strings. Preference comes down to touch and playing style.

Is it bad to mix guitar string brands?

It’s not ideal. Sets are designed to balance tension and feel across all strings.

Can the choice of guitar string affect intonation?

It can. Different gauges and materials may require minor setup adjustments.

Refresh Your Sound With Guitar Strings From AMS

A new set of guitar strings can change how your instrument feels and sounds in an instant. Whether you’re chasing brightness, smoother playability, or strings that last longer between changes, the right set makes it obvious the moment you tune up. American Musical Supply makes it easy to upgrade with a wide selection of guitar strings to stock up on. Browse our full lineup and find the strings that fit your guitar and your playing style. 

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