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Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings   

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Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings are a perfect match for those who like chunky rhythms for rock and roll or blues. Power S...Read More

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See All Ernie Ball .011 Gauge Electric Guitar Strings
OVERVIEW

Try the new and improved strings ideal for drop tuning.

Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings are a perfect match for those who like chunky rhythms for rock and roll or blues. Power Slinkys have long been favored by Slash, Metallica and Kenny Wayne Shepherd due to the thicker gauge combination providing a slightly more powerful tone. 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.

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: 11-14-18-28-38-48.


Start feeling the power of Cobalt today. Order now!

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Review Snapshot®

by PowerReviews
Ernie Ball2720 Cobalt Power Slinky Electric Guitar Strings
 
4.6

(based on 16 reviews)

Ratings Distribution

  • 5 Stars

     

    (10)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Good tone (6)
  • Long life (5)
  • Well built / quality (4)

Cons

No Cons

Best Uses

  • Practicing (4)
  • Concerts (3)
    • Reviewer Profile:
    • Experienced (6)

Most Liked Positive Review

 

Best worthwhile string improvement in 30 years

Excellent string - unrealistic price.
I've been playing guitar for around 40 years, most of it on a 1969 Gibson ES345, but I also have a Strat and a customized PRS that...Read complete review

Excellent string - unrealistic price.
I've been playing guitar for around 40 years, most of it on a 1969 Gibson ES345, but I also have a Strat and a customized PRS that I used for mostly live Classic Rock gigs. Because of high humidity here in Florida strings quickly lose the fresh ring they have when you first install them. I've tried many brands including Elixir, which I still use on my Martin acoustic. These Cobalt strings are the best strings I've played for electric. I use .009 - .011 guage strings but I'm using the .011 guage Cobalt strings. They are soft and silky on the hands and the fretboard but deliver a lot of body and especially harmonics. The harmonics of every note make the string "sing" a little better than the non-Cobalt strings. You can hear and feel the difference. I will stick with Cobalt for now. It is a great string - noticibly better than nickel etc. I'm not sure that they're twice as good as a regular string so I'm not convinced that they are priced correctly because the cost is double compared to regular strings. I think if they will bring the cost into the same, or slightly more than, price range as regular strings they'll have massive adoption. For every semi- and professional guitarist out there, there are a thousand amateurs. Pros will shell out double for the Cobalt but non-pros not so much. They'll sell a lot more strings to a lot more people if they make the cost more reasonable.
Top of the line. Literally. Very nice string to hear and to play. Of course, if you're a muppet playing nothing but screamo, metal and grunge with distortion it doesn't matter - chicken wire will suffice. If you want a string that will give you every nuance, that can be a little "hotter" to give you that extra signal and harmonics in pickup output then you are going to love this string.
Too expensive. While the string is very nice, and definately better than others, the doubled price is not warranted. If Ernie Ball expect to achieve universal adoption they need to bring the price within, say, 20% of regular strings. Value isn't that great. I'm a sound snob, but most people can't hear the difference enough to shell out double for this string.

VS

Most Liked Negative Review

 

Good sound, but harsh on fingers

I could definitely hear the improved tone that these strings advertise. However, it felt like I was playing on sandpaper. Because of the feel, I replaced the strings with nickel-plated GHS Boomers after...Read complete review

I could definitely hear the improved tone that these strings advertise. However, it felt like I was playing on sandpaper. Because of the feel, I replaced the strings with nickel-plated GHS Boomers after only a week. I am not a novice, but I am also not the most experienced player. Thus, perhaps a more experienced player would really like these strings for their tone.

Reviewed by 16 customers

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Displaying reviews 1-10

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3.0

Good sound, but harsh on fingers

By Drew

from Fort Worth, TX

About Me Experienced

Pros

  • Good Tone

Cons

  • Rough Feel

Best Uses

    Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

    I could definitely hear the improved tone that these strings advertise. However, it felt like I was playing on sandpaper. Because of the feel, I replaced the strings with nickel-plated GHS Boomers after only a week. I am not a novice, but I am also not the most experienced player. Thus, perhaps a more experienced player would really like these strings for their tone.

    Comment on this review

     
    5.0

    Adds tone to thin-sounding guitars

    By Nightspore68

    from Fort Worth, TX

    About Me Experienced

    Ask me a question

    Pros

    • Good Tone

    Cons

    • Harder To Bend

    Best Uses

    • For Weak Pickups
    • Practicing

    Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

    I had really lost interest in my Charvel Wildcard. Its tone was thin and almost grating. The notes didn't have any heft. It was a shame because the guitar is very easy to play and has a real comfortable yet fast neck.

    I actually got these strings by accident after misinterpreting the Ernie Ball website, which recommended them for richer sound. I think what they really meant was for bass-heavy tone, i.e., to fatten up a Strat. When I realized this I decided to try them on my Charvel instead of the Les Paul I had planned to put them on.

    I'm really glad I did. The Charvel sounds terrific now. It's a real "full-bodied" tone with these .011s. It is harder to play (but not hard to play). And it's much harder to bend notes. But on the upside you have to really mean it when you hit a string or there's little response, and I find this cuts down on the number of unintended notes I play.

    Also I think it's an excellent practice string, almost an acoustic guitar gauge that will strengthen your fingers. Switching to a guitar with a lighter gauge after playing these is a bit of a relief on one's hands.

    I should mention I've got the Charvel tuned down one-half step now (and the intonation checks out OK, strangely, even though I had .009s on that guitar previously).

    If it matters I play mostly blues-rock, like Zeppelin and Cream. I would think these strings suitable for any genre, however.

    Incidentally, before I installed them, I got email approval from both Gibson and Charvel. (I was worried they might damage the set neck on the Gibson, but they said not to worry.) Charvel said I might need to adjust the truss rod, which I haven't and I don't think I need to.

    I recommend trying them out, especially if you have a guitar whose tone you haven't been able to unlock.

    Comment on this review

     
    4.0

    Great Strings - if you like the tone.

    By NJ-Guitarist

    from USA

    About Me Experienced

    Ask me a question

    Pros

    • Long Life
    • Strong

    Cons

      Best Uses

        Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

        I tried these for a few months. Guitar players are always looking for something new and different. At first, I was over-the-top about them but grew tired of the tone they produce. I recently changed to EB RPS11's and have returned to a truly clear and recognizable tonal quality that I enjoy more. It all comes down to personal preferences and guitar players all have them. Try Cobalt strings for yourself and decide if you like the quality of their sound.

        Comment on this review

         
        5.0

        My New Favorite Strings!

        By Niloy63

        from Portland, ME

        About Me Experienced

        Verified Buyer

        Pros

        • Better Low-end Definition
        • Consistent
        • Good Tone
        • Increased volume
        • Long Life
        • Strong

        Cons

          Best Uses

          • Concerts
          • Practicing

          Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

          Quite simply, these strings brought my guitar even more to life. There was a NOTICEABLE difference! I have the 10 gauge on my Strat and my Schecter C1 Classic, and the 11 gauge on my Les Paul and my C-1 35th Anniversary. And let me tell you... they ALL sound better! I highly advise you try these!

          Comment on this review

           
          5.0

          Added crunch

          By taillightguarantee

          from Joliet Il

          About Me Experienced

          Ask me a question

          Pros

          • Good Tone

          Cons

            Best Uses

              Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

              They made a noticeable difference in output from my pickups.

              Worth the extra money.

              Comment on this review

              (1 of 2 customers found this review helpful)

               
              5.0

              My guitar has a big butt and i cannot ly

              By T-Man

              from Quakertown, PA

              About Me Professional Musician

              Ask me a question

              Verified Buyer

              Pros

              • Consistent
              • Fat Lady Sings Tone
              • Good Tone
              • Long Life
              • Strong

              Cons

              • None In 6 Mos

              Best Uses

              • All Around Winner
              • Backup
              • Concerts
              • Practicing

              Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

              These strings are like adding a buffer to a long signal chain and quality cables too boot, do the math!

              Comment on this review

               
              5.0

              Last Forever

              By VaporizerMax

              from Vermont

              About Me Experienced

              Pros

              • Long Life
              • Strong

              Cons

                Best Uses

                • Concerts
                • Practicing

                Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

                I play in a metal band. I've played a lot of different strings, but keep coming back to power slink's. While I love the feel and sound, they were always good for a couple of practices and maybe a show or two. After which, I knew one of them was about to break and the sound just wasn't the same. I balked at the price of Cobalts but felt that longer life, if real, was worth it. I got ready for a mini tour (five dates) and strung on these bad boys. They lasted throughout two practices and all five shows without breaking, and only now is the sound a little more dull. This might not seem that rare to you, but trust me. No strings have ever made it through multiple shows with me. We thrash on them too hard. These babies rule. Well worth the extra cash.

                Comment on this review

                 
                4.0

                Helps Passive Pickups

                Pros

                • Good Tone
                • Long Life

                Cons

                  Best Uses

                    Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

                    I really like what they do to passive pickups. For me it tightend the sound up. Bass is more focused and mids come through better. However I tried them on my EMG equipped guitar and felt it thinned the sound out too much, however the Dunlop Heavy Core strings sound great with EMGs. Worth a try.

                    Comment on this review

                    (1 of 1 customers found this review helpful)

                     
                    5.0

                    Best strings hands down...

                    By Rob

                    from Mars, PA

                    Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

                    I have what one would call "swamp hands". I play both bass and guitar and used to play out with a local band on a semi regular basis. I love the bright sound of new strings and had to change them every show due to the grunge build-up I'd leave even after wiping them down.

                    After playing them for a considerable amount of time now (Month or so), I'd say that they are as bright and playable as the day I put them on.

                    It would take almost an act of God to make me ever switch to anything else.

                    Comment on this review

                    (1 of 1 customers found this review helpful)

                     
                    4.0

                    Awesome strings!

                    By J Matthew Croushorn

                    from Nashville, TN

                    Comments about Ernie Ball 2720 Cobalt Power Slinky Electric Guitar Strings:

                    I used to play DR Pure Blues and their coated strings, but I've been experimenting around with different brands and these strings might have me convinced to switch! The price just feels like a little too much, but if they last longer than the nickel wound strings it may be worth it for the enhanced sound.
                    These strings are a bit brighter than your standard nickels, and I can really hear the harmonics of every note I play. Can get a little tinny say on the bridge pickup of a Strat or Tele, but if you're buying these strings you should probably know how to use a tone knob by now. The lower strings feel a bit more pliable while still giving you that nice boomy sound that we all like from our Power Slinkys.
                    I haven't had these on my guitar for very long, but if anything it seems that they'll last a bit longer than regular old Slinkys before they get stiff and crappy. Very smooth to the touch, so far so good!
                    I really like the sound of these, but the price is a little steep for what you get.

                    Comment on this review

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