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Ernie Ball 2721 Regular Slinky Cobalt Electric Guitar Strings - .010-.046

.010-.046 Electric Guitar Strings - Cobalt
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Ernie Ball 2721 Regular Slinky Cobalt Electric Guitar Strings - .010-.046
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$9.99
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Next-gen Guitar Strings

Ernie Ball Cobalt guitar strings are made of a new alloy formulation that gives you higher output, better sound, and longer life. Cobalt strings' special iron/cobalt blend attracts the magnets in your pickups better than any other alloy. When you string up with Ernie Ball Cobalts, you'll immediately notice the incredible comfort these strings offer - silky and pliable under your fretting fingers; your pick will seem to glide over the strings, letting you execute fast passages effortlessly. And when you plug in, you'll get increased power, beefy yet defined lows, improved midrange focus, harmonics, and sustain, and crisp highs. Try a set of Ernie Ball Cobalt strings - you're gonna love 'em!

Ernie Ball Cobalt Guitar Strings at a Glance:
  • Beta tested by the creme de la creme
  • Cobalt formula gives you higher output and better sound
  • Cobalts last longer
Beta tested by the creme de la creme

In the development of their Cobalt strings, Ernie Ball tapped select members of their star-studded artist roster - including Steve Morse, John Petrucci, Randy Jackson, Tony Levin, and Slash - to be beta testers for the new formulation. John Petrucci reported that the Cobalts sound "amazing," with "increased power, incredible clarity, and incredible sonic balance." He noted that the Cobalts seem "softer" under your fretting fingers (the term he used was "buttery"). Slash noted that - before being plugged in - the Cobalts "have an entirely different feel than normal strings." He goes on to characterize this sensation as "bouncy and pliable," and "a lot of fun for bending." When amplified, Slash commented that the Cobalts were just as bright as titanium strings, but more "guttural," with more "growl to them."

Cobalt formula gives you higher output and better sound

A half century ago, Ernie Ball practically invented "rock" guitar strings. And now, with Cobalt, they've re-invented them. After exhaustive testing of over 350 alloy combinations, the company ended up with an optimal formula that - as compared with conventional strings - gives you higher output, beefier lows with increased definition, improved midrange focus, shimmering harmonics and more robust sustain. You get a brighter sound without inducing harshness by turning up the treble on your amp.

Cobalts last longer

Ernie Ball Cobalt guitar strings last longer, retaining their brightness long after other strings have given up the ghost. Steve Morse reported having a set on one of his guitars "for several weeks," and with daily use - "sweaty hands" and all - the Cobalts "still sound bright... They just don't have that dead sound," he says. So, with higher output, better sound, and the monetary benefits of not having to change strings so often, Cobalts have it all over traditional alloy formulations. Check out a set of Ernie Ball Cobalt strings - you'll love 'em!

Ernie Ball Cobalt Guitar Strings Features:
  • Punchier, higher output strings
  • Beefier lows, with increased definition and growl
  • Increased midrange focus, harmonics, and sustain
  • Longer-lasting than conventional strings
  • .010, .013, .017, .026, .036, .046
  • Made in USA
Try the strings the pros ar raving about: Ernie Ball Cobalt guitar strings
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Tech Specs

  • Guitar Type: Electric Guitar
  • Number of Strings: 6
  • Coated: No
  • Gauges: .010, .013, .017, .026, .036, .046
  • Core Material: Steel
  • Winding Material: Iron/cobalt alloy
  • Winding Type: Round Wound
  • Manufacturer Part Number: P02721

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Customer Reviews

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Rated 5/5

Amazing

These strings made a shocking improvement to my sound.
Rated 5/5

Want low-tension strings for your acoustic? Instead of $26/set strings, try these.

You read that right, I put 'em on my acoustics, and they sound great. Even, not woofy or boomy, and they feel like nothing else you might have tried. I had a set of these on my old Alvarez 5059. Took those off and tried D'Addario Balanced Tension 10-46. Had those on for one day. One day, and I was saying, "I want my Balls back!" Put on a fresh set of these, and I'm a happy camper. Great if you're accompanying a singer, as they don't produce a lot of voice-burying noisy harmonics.
Rated 5/5

Best strings I've ever used

Exceptional tone and playability, they feel great, I run them on my 7 strings and they're the best strings I've used to date.
I noticed that a bunch of the poor reviews talking about string breakages I have yet to have that issue. I also notice them talking about regular slinkys being better when in fact they're the same exact string with a different wrapping, which is why they a tad more and sound better. Returning to what I was saying these strings outclass so many brands and they do not disappoint.
Music background: Guitarist for I Decide I
Rated 5/5

The remedy for a nickel allergy

I'm a touring and session guitarist and have been playing for a long time now. I, as well as a small number of my colleagues, have a nickel allergy. This poses a huge problem as most electric guitar strings are wound with nickel. For the longest time, I had to use stainless steel strings, which are harsh sounding and feeling. However, when I discover the Ernie Ball Cobalts, I was blown away. They have no nickel but feel like regular guitar strings. The sound is full and natural sounding. If you, like me, have a nickel allergy (or you don't and just like great guitar strings) try the cobalts.
Music background: Professional touring and session guitarist
Rated 5/5

Made Me A Believer

I have a Gibson LP and even though I like brite-wires I just wasn't sure about the sound when it came time to record. So I went on a mission to try and find the perfect strings to help achieve the sound I was looking for when the guy at my local shop suggested these. For real I've always hated Ernie Ball strings until I tried these things. What a difference. They give you more output and string definition. I did some setup adjustments to help harmonize the strings to my liking and that thing sounds great. If you haven't tried these already I would definitely recommend it. They might just give you the sound your looking for.
Music background: Home Recording
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