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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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  • List:
    $17.00
  • Price:
    $761
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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!

Reviews
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Review Snapshot

by PowerReviews
Ernie Ball2720 Cobalt Power Slinky Electric Guitar Strings
 
4.6

(based on 17 reviews)

Ratings Distribution

  • 5 Stars

     

    (11)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Good tone (7)
  • Long life (6)
  • Well built / quality (5)
  • Consistent (3)

Cons

No Cons

Best Uses

  • Practicing (4)
  • Concerts (3)
    • Reviewer Profile:
    • Experienced (7)

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 17 customers

Displaying reviews 1-10

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5.0

Ernie Ball

By Richard

from undisclosed

About Me Experienced

Verified Buyer

Pros

  • Consistent
  • Good Tone
  • Long Life
  • Strong

Cons

    Best Uses

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

      I've been using Ernie Ball strings for 45 years. I have tried others and always come back to Ernie Ball.

      Comment on this reviewHelp Icon

      (0 of 1 customers found this review helpful)

       
      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 reviewHelp Icon

         
        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 reviewHelp Icon

         
        4.0

        Great Strings - if you like the tone.

        By NJ Guitarist

        from NJ

        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 reviewHelp Icon

             
            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 reviewHelp Icon

               
              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 reviewHelp Icon

                  (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 reviewHelp Icon

                   
                  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 reviewHelp Icon

                     
                    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 reviewHelp Icon

                        (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.

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                        Displaying reviews 1-10

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