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  • Ernie Ball 2727 Cobalt Beefy Slinky 11-54 String Set
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Ernie Ball 2727 Cobalt Beefy Slinky 11-54 String Set

Price: £10.98 FREE UK delivery.
Only 2 left in stock.
Dispatched from and sold by Guitarbitz Guitar Shop.
12 new from £10.52
  • Maximize output and clarity
  • Extended dynamic range
  • Incredible harmonic response - increased low end and crisp clear highs
  • Provides stronger magnetic relationship between pickups and strings
  • Soft and silky to the touch making string bending a breeze
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Frequently Bought Together

Ernie Ball 2727 Cobalt Beefy Slinky 11-54 String Set + Ernie Ball 2223 Electric Guitar Strings Super Slinky + Planet Waves Lemon Oil
Price For All Three: £19.08

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Product Information

Technical Details
Item Weight23 g
Product Dimensions10.8 x 1.3 x 14 cm
Item model number2727
String Gaugeheavy
Country Produced InUSA
Size2727 Beefy Slinky 11-54
Additional Information
Best Sellers Rank 13,078 in Musical Instruments (See top 100)
Shipping Weight23 g
Date First Available29 Mar. 2012
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Product Description

Product Description

Engineered to maximize output and clarity, Ernie Ball Cobalt Slinky Guitar Strings are the latest innovation in string technology. Seeking to provide guitarists and bassists with a new voice, Cobalt strings provide an extended dynamic range, incredible harmonic response, increased low end, and crisp, clear highs. Cobalt provides a stronger magnetic relationship between pickups and strings than any other alloy previously available. Cobalt Slinkys are also soft and silky to the touch, making string bending a breeze. Patent pending.

Box Contains

Ernie Ball 2727 Cobalt Beefy Slinky 11-54 String Set

Customer Questions & Answers

Customer Reviews

3.2 out of 5 stars
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Most Helpful Customer Reviews

1 of 1 people found the following review helpful By Chris Cook on 9 Feb. 2014
Verified Purchase
I think some people will love these but not me - think you have to be a much better player and have mighty fingers on both hands to get these to ring properly. The G string in particular seems to have no give. When you do play them well they sound great but really I think not for inexperienced players like me. PS - they also feel REALLY tight (especially the A string) on the guitar- worried for my neck!
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1 of 1 people found the following review helpful By RevolutionBaby1 on 13 April 2013
Verified Purchase
really like these , they feel very comfortable to the skin , the tone from them is good too, its a change from the nickle but change is good sometimes :)
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By Chavvy on 31 Jan. 2013
Verified Purchase
I bought these on a whim, and glad I did. I would recommend these to anyone now that I have tried them.
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By Evan haines on 7 Nov. 2014
Verified Purchase
11 snapped during tuning at nowhere near full tension, over priced and overrated. Will not be buying again.
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Most Helpful Customer Reviews on Amazon.com (beta)

Amazon.com: 273 reviews
36 of 36 people found the following review helpful
Amazing strings, worth the hype! 17 Mar. 2012
By Azothyran - Published on Amazon.com
Verified Purchase
I installed these strings onto my ESP guitar as soon as I got them in the mail, and I must say it was worth the wait. The first thing I noticed was the feel. These strings are silky smooth, even the low E string. The second thing I noticed was the durability. As I pulled the string across the fretboard I noticed the reaction these strings have to the magnetic pickups...just like Ernie Ball claims, these strings react STRONGLY to magnets. I had to peel these strings off the pickups a few times while I was installing them. Then I noticed the durability of these strings as I tuned them. I felt a fair bit of resistance, much more than my old strings when I first installed them. They're also a lot more sensitive to tuning adjustments, although after leaving them sit for two hours after JUST BEING INSTALLED, they were only 5 cents off on the tuning. A small twitch of the tuning peg and they were back to where they should be. I figured, like any string, I would be fighting with them for the next few days trying to stretch them enough so they'll stay in tune without constant adjustment, but this is my third day of playing with them and they have stayed in perfect tuning since I installed them. I can't guarantee they will work for you the same way, but I know they will hold up to a lot more abuse than many other strings I've used so far. The final thing I noticed was the TONE. These strings sound quite a bit different, they have a much tighter mid to high and they seem to have less of a tendency to chaotically overlap each other's sound. Each string has a distinctive tonality that sets them apart from each other. You play the same note on different strings and you can easily hear the difference between the two. Sustains seem to last forever, and the clarity is incredible...only problem I'm having is trying to explain how it sounds in words...if you decide to buy them, try them with distortion and without, you'll be impressed by their versatility.

To summarize,

-Strong reaction to the magnets in pickups
-Stay in tune very well (for me at least)
-Sharp, clear tone
-Each string is distinguishable from another
-Silky smooth

If you have any questions, shoot a comment if you want, but I am telling you, I would not hesitate to try these strings at least once.
32 of 32 people found the following review helpful
Slinky regular cobalt review 4 Jan. 2013
By Eric Hanson - Published on Amazon.com
Verified Purchase
Bear in mind, as far as guitar skills go I'm in the novice/intermediate range so this review isn't coming from an expert, rather from someone still learning how to play well. When I pick up my electric guitar I tend to play more rock/metal (e.g. Skynyrd, Metallica, Monster Magnet, etc.) than anything else so I figured cobalts would be a good call to test out.

Overall the cobalts are excellent strings for me as the tone and sustain are awesome for playing rock/metal, they're very durable compared to regular slinkys and hold their tune very well even right after putting them on. I find them a bit easier to bend than regular nickel-wound strings which helps for someone learning though they are not as 'smooth' (the edges of the wound strings seem a little sharper under your fingers) as regular nickel-wound strings. The cobalts also seem to last a lot longer than regular slinkys (maybe 3 times longer or so) before they start to sound 'dead' so the higher cost is worth it for that attribute alone since it's less time spent restringing/breaking in one set of cobalts vs. three sets of regular slinkys.

As a sidenote, I play Rocksmith a lot to help me learn (really a great tool for people learning) as well as encourage me to practice and the cobalt strings solved a lot of problems I was having with notes not registering in the game, which was driving me nuts. It's probably due to old pickups in my guitar or something, but whatever the reason I'd definitely recommend these strings to fellow Rocksmith players.

Definitely going to keep buying these in the future.
25 of 25 people found the following review helpful
Best strings I have used 15 Nov. 2012
By Dave - Published on Amazon.com
The variance in reviews demonstrates how personal string selection is to guitarists. There there are a number of physical properties in strings that affect sound, playability and longevity and it is interesting how some factors are given more importance than others. To me, the Ernie Ball Cobalt strings are superior in all three aspects, but I do not believe that I am right, it is just that these strings are right for me. Because I have not played profesionally for many years, I leave my strings on my guitars for 6 months or more. Because I have several fine instruments that I play more than others, each set of strings gets less than 6 months' of wear at a reduced wear amateur rate. I used to play D'Addario nickel wound light guage 10-46 strings because I liked them the best and secondarily, they were relatively inexpensive. However, I believe the Ernie Ball Cobalt strings are better and are worth the additional cost. First, I like their clean, bright and loud sound and find their sustain to be much better than average. I recognize that ultimately, the sound depends very much upon the settings and effects that emanate from the speakers of your amplifier(s) and that even young guitarists frequently have some hearing loss, particularly at high frequencies. This will make clear bright strings sound a little better to those who have lost some hearing sensitivity to high frequencies, myself included. But what I like best about these strings from a sonic point of view is their noticably increased loudness which gives a greater dynamic range and accordingly increases dynamic sensitivity. I also like their increased sustain which may be a function of their initial loudness. I have found that they play smoothly and just feel good to me. I also have compared their longevity to the D'Addario strings I used to play and find their sonic deterioration over time to be much less. Accordingly, I have rated them at 5 stars because I believe they are the best available electric guitar strings on the market given my somewhat limited sampling of available strings. I point out that this is a belief and in no way is it a result of any objective measurement. This does not constitute a disagreement with those who do not like these strings because it really does not matter to me what their choice might be nor should my opinion weigh strongly upon them. However, based upon my experience, I would urge players to give these strings a try if they have not already done so.
11 of 11 people found the following review helpful
5 Stars for 6 Strings 9 Nov. 2012
By Sherminator - Published on Amazon.com
There are a lot of good strings out there, but I've been satisfied with the Ernie Ball Slinky, so when the Cobalt was introduced I had to try them.

There are four things I look for in strings: the way they sound, how well they stay in tune, and how smooth they feel to my finger tips and how long they last.

I like the clear and bright sound of the Cobalt strings and use my electronics if I want a different sound.

These strings definitely stay in tune, and I've used them on very expensive guitars and not-so expensive guitars. Maybe its my imagination, but it seems to me that changes in temperature have less effect on the tuning.

I really like that they feel smooth. I think the metal is mircroscopically less porous and there is less corrosion so they don't produce very much unwanted ambient sound when sliding up and down the strings.

Yes, they are a little pricey (save by buying on line) but they last longer so the real price difference is not so much. Besides, I don't like changing strings so I appreciate that these last.
8 of 8 people found the following review helpful
Fantastic strings 11 Jun. 2013
By M. Spence - Published on Amazon.com
Verified Purchase
I had watched a video review by Kenny Wayne Shepherd on these strings in which he stated he really liked them and put them on all his guitars. I thought there may be some endorsement issues associated but he did a thorough job of presenting his fondness. Therefore, I chose to go in for a set to try them.

I was pleasantly surprised after I strung them on my Les Paul. First was the general feel of the strings which seemed to be smoother than others I had tried, including super slinky and rock and roll super slinky. During my stretch routine, these strings came to a stable point much faster than any other strings I have tried. I stretched them then played for about 20 minutes, expecting to re-tune across the board and found that the G, B, and E high strings were only slightly out (probably because of bigger bends). That amazed me.

The clarity of the sound was another awesome feature. These are very crisp but have depth to the tone. They don't sound twangy or plinky. I found it rather difficult to get consistent pinch harmonics with other strings but was throwing them out all over the place with these. It's almost like the strings are alive.

Amazing strings. I can't speak to the longevity yet but others have said they last longer and stay in tune longer. It appears they are engineered well enough to live up to that claim. The engineering and sound from these strings also allowed me to fine-tune my intonation better than I ever had before. Immediately after this review, I am ordering 5 more sets.
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