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Ernie Ball Cobalt

Ernie Ball has always had a passion for music, with a career going back to 1949 when he enlisted in the U.S. Air Force and joined its service band. While teaching guitar throughout the early years of his career, he noticed how difficult it could be to bend the strings and get proper fingering—especially for new players. That observation led to Ernie Ball to create his own line of guitar strings, which have been providing guitarists with amazing sound ever since. Cobalt strings are one of the newest developments from the company, taking Ernie Ball's "Slinky" string style and applying it to a brand new material.

So, why use cobalt in a string? Essentially, it's because cobalt gets along better with electric guitar and bass pickups. Those pickups use magnetic coils to detect the vibration of the string, and Ernie Ball's cobalt alloy has a stronger interaction with the coils than other metals do. This translates to a string that pushes active-pickup levels of output even on passives, while still providing outstanding clarity. Whether you play guitar or bass, you can expect these strings to deliver a wide dynamic range with great performance in both the lows and highs.

If you've used some of the other Ernie Ball "Slinky" strings, you can expect the same silky-smooth feel from the cobalts. These strings bend easily, making fretting a breeze for beginners as well as allowing pros to get around the fingerboard with less effort. That's good news for long shows and songs that take a lot of dexterity.

Ernie Ball strings are popular with artists including Slash, Peter Frampton, Steve Vai, Eric Clapton, Paul McCartney and Keith Richards—and that's just a short list. We think you'll agree that they're on to something when it comes to making good strings, and these cobalt electric guitar and bass strings definitely live up to the Ernie Ball name.
 

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  1. Sale
    Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings 12 Pack Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings 12 Pack
    $69.99
    MSRP:
    $204.00 (save 66%)
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  2. Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings
    $7.99
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    $17.00 (save 53%)
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  3. Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings - 3 Pack Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings - 3 Pack
    $29.97
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    $51.00 (save 41%)
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  4. Sale
    Ernie Ball 2723 Cobalt Super Slinky Elecric Guitar Strings 12 Pack Ernie Ball 2723 Cobalt Super Slinky Elecric Guitar Strings 12 Pack
    $69.99
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    $204.00 (save 66%)
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  1. Ernie Ball 2715 Cobalt Skinny Top Heavy Bottom Electric Guitar Strings Ernie Ball 2715 Cobalt Skinny Top Heavy Bottom Electric Guitar Strings
    $9.24
    MSRP:
    $18.25 (save 49%)
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  2. Price Drop
    Ernie Ball 2730 Cobalt 7-String Skinny Top Heavy Bottom Electric Guitar Strings Ernie Ball 2730 Cobalt 7-String Skinny Top Heavy Bottom Electric Guitar Strings
    $10.50
    MSRP:
    $22.75 (save 54%)
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  3. Ernie Ball 2723 Cobalt Super Slinky Elecric Guitar Strings Ernie Ball 2723 Cobalt Super Slinky Elecric Guitar Strings
    $7.99
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    $17.00 (save 53%)
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  4. Ernie Ball 2723 Cobalt Super Slinky Elecric Guitar Strings - 3 Pack Ernie Ball 2723 Cobalt Super Slinky Elecric Guitar Strings - 3 Pack
    $28.20
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    $51.00 (save 45%)
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  1. Ernie Ball 2727 Cobalt Beefy Slinky Electric Guitar Strings Ernie Ball 2727 Cobalt Beefy Slinky Electric Guitar Strings
    $9.95
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    $18.25 (save 45%)
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  2. Top Rated
    Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings
    $7.99
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    $17.00 (save 53%)
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  3. Ernie Ball 2722 Cobalt Hybrid Slinky Electric Guitar Strings Ernie Ball 2722 Cobalt Hybrid Slinky Electric Guitar Strings
    $9.99
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    $17.00 (save 41%)
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  4. Top Rated
    Ernie Ball 2736 Cobalt Regular Slinky 5-String Electric Bass Strings Ernie Ball 2736 Cobalt Regular Slinky 5-String Electric Bass Strings
    $31.55
    MSRP:
    $69.99 (save 55%)
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  1. Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings - 3 Pack Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings - 3 Pack
    $28.05
    MSRP:
    $51.00 (save 45%)
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  2. Ernie Ball 2726 Cobalt Not Even Slinky Electric Guitar Strings Ernie Ball 2726 Cobalt Not Even Slinky Electric Guitar Strings
    $8.96
    MSRP:
    $18.25 (save 51%)
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  3. Ernie Ball 2730 Cobalt 7-String Skinny Top Heavy Bottom Electric Guitar Strings - Buy 10, Get 2 FREE Ernie Ball 2730 Cobalt 7-String Skinny Top Heavy Bottom Electric Guitar Strings - Buy 10, Get 2 FREE
    $109.99
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    $273.00 (save 60%)
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  4. Price Drop
    Ernie Ball 2733 Cobalt Hybrid Slinky Electric Bass Strings Ernie Ball 2733 Cobalt Hybrid Slinky Electric Bass Strings
    $22.95
    MSRP:
    $59.99 (save 62%)
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  1. Ernie Ball 2715 Cobalt Skinny Top Heavy Bottom Electric Guitar Strings - Buy 10, Get 2 FREE Ernie Ball 2715 Cobalt Skinny Top Heavy Bottom Electric Guitar Strings - Buy 10, Get 2 FREE
    $99.99
    MSRP:
    $219.00 (save 54%)
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  2. Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings - Buy 10, Get 2 FREE Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings - Buy 10, Get 2 FREE
    $99.99
    MSRP:
    $204.00 (save 51%)
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  3. Ernie Ball 2732 Cobalt Regular Slinky Electric Bass Strings Ernie Ball 2732 Cobalt Regular Slinky Electric Bass Strings
    $24.70
    MSRP:
    $59.99 (save 59%)
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  4. Ernie Ball 2728 Cobalt 7-String Regular Slinky Electric Guitar Strings Ernie Ball 2728 Cobalt 7-String Regular Slinky Electric Guitar Strings
    $11.99
    MSRP:
    $21.00 (save 43%)
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