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Ernie Ball

Ernie Ball - Regular Slinky Cobalt Electric Bass Guitar Strings - .045-.130 5 String

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PO2736
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749699127369
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Ernie Ball Regular Slinky Cobalt Bass Strings - 5-String Long Scale | No Limit Guitar Co, Idaho Falls

Ernie Ball Regular Slinky Cobalt bass strings are built around a revolutionary iron and cobalt alloy formulation that delivers higher output, superior tonal clarity, and impressive longevity compared to traditional bass string materials. The unique cobalt blend is engineered to interact more powerfully with your pickups' magnets than any other alloy on the market, translating directly into stronger signal output and a more dynamic, expressive tone. Whether you're driving deep low-B grooves or cutting through a dense mix on your five-string, these long-scale bass strings give you the tools to perform at your best.


Product Overview

The science behind Cobalt strings starts with their iron and cobalt alloy winding — a material chosen specifically for its exceptional ferromagnetic properties. Because cobalt attracts magnetic fields more effectively than nickel or standard steel, your pickups capture more of the string's vibrational energy, resulting in higher output and a noticeably more present, detailed tone from your lowest B string all the way up to your G.

Beyond their tonal characteristics, Ernie Ball Cobalt strings are designed with player comfort in mind. The silky texture of the cobalt winding feels smooth and pliable under the fretting hand, reducing finger fatigue during long sessions and allowing for fluid movement through fast passages and intricate techniques. For five-string players who cover a wide range of the fretboard, the difference in feel is immediately apparent.

Sound-wise, the Regular Slinky Cobalt 5-string set produces a wide tonal profile: robust and well-defined low frequencies, enhanced midrange clarity with natural growl and presence, rich harmonic content, and crisp, sustained highs. With gauges running .045, .065, .080, .100, and .130, this set provides a well-balanced tension across all five strings — playable and responsive whether you're fingerpicking, slapping, or playing with a pick. Note: due to their length, Cobalt strings may not be compatible with some top-loading P Bass instruments — contact us at No Limit Guitar Co in Idaho Falls if you have any questions about fit.


Ideal For

  • Five-string rock, metal, and funk bassists who need high-output strings that punch through dense mixes with presence and clarity
  • Extended-range players who demand a tight, well-defined low B string without sacrificing harmonic richness across the upper strings
  • Bass guitarists who prioritize playing comfort and want a smooth, pliable string feel during long rehearsals and live performances
  • Gigging and recording musicians who need durable bass strings that maintain consistent tone and intonation over extended use
  • Five-string bass players in Idaho Falls looking to upgrade their tone with a proven, professional-grade string set

Key Features

Iron/Cobalt Alloy Winding for Maximum Pickup Response

The iron and cobalt alloy winding is specifically formulated to attract your pickups' magnets more effectively than nickel or standard steel. The result is measurably higher output and a stronger, more vibrant signal — particularly noticeable on the low B string, where cobalt's magnetic properties help deliver a tight, focused response that lesser strings struggle to achieve.

Resonant Low End with Midrange Presence and Growl

Ernie Ball Cobalt strings are voiced for a full, powerful tonal character — deep and well-defined lows, a focused midrange with natural growl and enhanced presence, and rich harmonic overtones. The crisp, sustained high end adds articulation without harshness, making it easy to find your place in any live or recorded mix.

Silky Texture and Pliable Feel

The cobalt winding produces a uniquely smooth surface that reduces friction under the fretting fingers. This translates to effortless movement across the fretboard, less fatigue over long sets, and the ability to execute fast passages and complex techniques with confidence — especially valuable when navigating the wider neck of a five-string instrument.

Exceptional Durability and Longevity

Cobalt's inherent material strength means these strings hold up to consistent, aggressive playing without losing their brightness or tonal character as quickly as conventional alloys. You get more mileage out of each set, making them a strong value for gigging and recording bassists alike.

Over 60 Years of String Innovation

Ernie Ball has been at the forefront of string design since 1962, when Ernie Ball introduced his first custom Rock N Roll guitar strings for gauge-particular players. Today, Ernie Ball produces strings trusted by guitarists and bassists worldwide, including the iconic Slinky family. Every set reflects a legacy built on innovation, quality, and a genuine commitment to musicians.


What's Included

  • Ernie Ball Regular Slinky Cobalt Bass Strings (one set, 5-string)
  • Gauges: .045, .065, .080, .100, .130
  • Manufacturer's warranty
  • Free standard shipping

Technical Specifications

Specification Details
Manufacturer Part Number P02736
Guitar Type Electric Bass
Number of Strings 5
Gauges .045, .065, .080, .100, .130
Winding Type Round Wound
Core Material Steel
Winding Material Iron / Cobalt Alloy
Scale Length Long Scale
Coated No

Get Your Hands on These Bass Strings Today

Stop by No Limit Guitar Co in Idaho Falls to pick up a set of Ernie Ball Regular Slinky Cobalt 5-string bass strings and hear the difference that cobalt alloy makes across all five strings. Our team is here to help you find the right strings for your bass, playing style, and budget. Visit our Idaho Falls guitar store or contact us today to check availability.