Item # 107599417 | Customer Ratings: ( 4 Based on 27 reviews)

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Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings
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Play like a pro with these revamped classics.

Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings are a new spin on Ernie Ball's best selling set of strings which have been played by the likes of Eric Clapton, John Mayer, Steve Vai and many more. The Cobalt Series is clearly an improvement on its classic nickel-wound counterpart giving the player increased sustain, clarity and output. In addition, they resist sweat and moisture better and have unmatched flexibility when compared to other nickel wound strings. Cobalt is the most magnetically active string alloy on the planet and attracts the magnets in your pickups more than any other string.

"Ernie Ball Cobalt Strings sound and feel better than anything I've ever played! You have to check these out!" - Slash.
"Cobalt Strings feel incredibly silky under my fingers and deliver more punch, output, and clarity than normal strings!" - John Petrucci.

All Ernie Ball strings are precision manufactured to the highest standards and the most exacting specs to assure consistency, optimum performance and long life. Made in the USA.

Gauges 10-13-17-26-36-46.

Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings

Will replace defective strings.

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Now you can get added warranty protection for your new gear. Pro Coverage steps in where the manufacturer's "normal wear and tear" ends. Our PRO COVERAGE program offers you UPGRADED COVERAGE if your product ever fails!

Pro Coverage includes:

  • Accidental damage protection (new gear only)
  • Expedited Repair
  • Free Shipping (for returns or repairs)
  • 100% Coverage for Commercial Use
  • Extended Return Period
  • Extended Price Protection
  • No Lemon Guarantee
  • Free Transfer of Coverage to a new owner
  • Repair Costs Covered for up to 3 years from date of purchase
  • Repairs Can Be Authorized Toll-Free by Phone or the via the web
Product Reviews
(Based on 27 reviews)
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Viewing Reviews 1 - 3 of 27 |
  • Best strings I've ever put on an electric guitar

    As reviewed by Vincent Bath on 2/21/2012

    I replaced the strings on a brand new Fender Stratocaster and the difference is more than substantial. Mine is the HSH model and sounded okay before. Now with the Cobalt strings each pickup change sounds like a different guitar. Fuller tones, remarkable clarity. I had no idea how good the pups were until I tried these strings. Wow!

    5 of 5 people found this review helpful.
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  • I like them, but...

    As reviewed by MATT MOUCHERON on 5/7/2012

    I'll cut to the chase. As compared to the run-of-the-mill nickel strings... THE GOOD 1) Smooth feel 2) Slightly increased output 3) Better definition/clarity (bright, but not tinny/shrill) 4) Very good tuning stability - tuned up to pitch quickly and stayed there very consistently THE NOT-SO-GOOD 1) A bit pricey 2) Very small drop in "warmth" - didn't bother me much So I really liked these as compared to nickel strings. However, I use GHS Progressives. Compared to these, the Cobalts have fewer advantages. Tonally, I think they are on the same level. The Cobalts may have a bit more output and smoother feel. The tuning stability might sway me to these. I'll need to see how they hold up over time. Only 1 gig on the Cobalts so far, so I'll need to weigh-in on the longevity at a later date. That will also give me some time to refine my opinion as the strings "season". Definitely worth a try as they do provide non-trivial differences. Everyone has different tastes, so no better way to decide than for yourself!

    4 of 4 people found this review helpful.
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  • never going back again

    As reviewed by stephen bauch on 4/28/2012

    When i first bought these strings i was let down. I noticed the output was higher but there was something that just didnt sound right. After a week i went back to the regular slinky nickel strings and i was stunned by how bad they sounded. They sounded lifeless. No punch at all and i had to turn my amp up to get the same output as the cobalt strings. 2 days later i put the cobalts back on and wont look back.

    3 of 3 people found this review helpful.
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PO Box 4769
Westlake Village, CA 91359
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