Ernie Ball 2727 Slinky Cobalt Beefy Slinky 11-54
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Manufacturer Information
Ernie Ball
https://www.ernieball.com
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Cobalt: more dynamics, more detail
With the Slinky Cobalt series, Ernie Ball offers a decidedly modern alternative to more traditional alloys. Cobalt stands out due to its higher magnetic induction compared to iron- or nickel-based alloys: your electric guitar gains in responsiveness, definition, and articulation, even on tight palm mutes, fast riffs, and expressive leads. The result: a sharper pick attack, mids that stand out, and a playing feel that highlights every intention.
Beefy Slinky 11-54: the perfect balance for heavy riffs
The Beefy Slinky 11-54 set is designed for guitarists seeking consistent tension and excellent stability, especially when downtuning or playing with a strong attack. Thicker low strings provide a solid and precise bottom end, while the highs maintain comfortable playability for bends and phrasing. Whether you lean towards modern rock, metal, or simply want a beefier tone, this gauge offers an effective compromise between punch, tension, and comfort.
Technical specifications
| Tension | Extra hard | Draw | 11-15-22-30-42-54 |
| Type of cord attachment | Ball end | 1st cord pull | 11 |
| Category | electric | Nbr of strings | 6 |
| Classification | Beefy | Material | cobalt |
| Brand | Ernie Ball | Material / metal type | cobalt |
| Model | 2727 Slinky Cobalt Beefy Slinky | Gauge | 11-15-22p-30-42-54 |
| Number of strings | 6 | Gauge (reminder) | 11-15-22-30-42-54 |
| Type | Cobalt Slinky Beefy Slinky | Packaging | hermetic pouch |
Questions frequently asked
What is the gauge of the Ernie Ball 2727 Cobalt Beefy Slinky?
The set features a 11-15-22-30-42-54 gauge across six strings. The first string is .011 and the ball end type is used.
Is the 11-54 gauge suitable for down-tuned instruments?
With its low strings reaching up to .054, this gauge is designed to offer consistent tension during down-tuning. The description also targets a clear attack and sustained riffs.
What effect does cobalt have on the sound of an electric guitar?
Cobalt has higher magnetic induction than iron- or nickel-based alloys. This property provides more response and definition on electric guitar. The pick attack is described as clearer, with more pronounced mids.
Are the Beefy Slinky 11-54 still suitable for bending?
The treble strings at .011, .015, and .022 maintain playability described as comfortable for bends and phrasing.
How are the Ernie Ball 2727 Slinky Cobalt Beefy Slinky packaged?
The 2727 reference is supplied in a sealed pouch. This packaging contains a set of six electric cobalt strings.



