Ernie Ball 2731 Slinky Cobalt – Premium Electric Bass Strings Power 55-110
The Ernie Ball 2731 Slinky Cobalt electric bass string set features an advanced cobalt alloy for bright, expressive tone and extended durability. Designed for 4-string electric basses, this set with gauges 55-110 provides an optimal balance between playability and powerful output.
The cobalt alloy delivers a brilliant, harmonic-rich sound with excellent dynamics – ideal for rock, metal, and modern music styles.
Power 55-110 string gauges offer firm tension, enabling precise playing with clear lows and singing highs.
Perfectly matched for 4-string basses of all common models (long scale).
24-month manufacturer warranty provides confidence in long-lasting quality.
What sets the Slinky Cobalt strings apart
Unlike traditional nickel strings, Ernie Ball uses a patented cobalt alloy that increases magnetic output and makes the tone clearer and more present. This gives both distorted and clean passages greater definition.
Ideal for...
These strings are aimed at bassists seeking a punchy, bright tone with long lifespan. Especially recommended for players of rock, metal, funk, and fusion – in rehearsal rooms and on stage alike.
How to use the strings
Remove old strings and clean the fretboard. Thread the new string through the bridge, wind it around the tuning peg, and tune to pitch. After installation, gently stretch the strings for stable tuning. The strings are designed for long-scale basses with a scale length of approximately 864 mm.
Ernie Ball is an American manufacturer of guitar strings and accessories, famous for the legendary Slinky strings. The brand is trusted by professional musicians worldwide and stands for highest quality and innovation. Ernie Ball strings offer a balanced feel and brilliant sound.
It is a set of electric bass strings with a cobalt alloy optimized for bright, harmonic-rich tone and long durability. The set contains four strings for 4-string basses in Power 55-110 gauges.
The set is designed for 4-string electric basses with long scale (approx. 864 mm). It fits most standard basses from brands such as Fender, Music Man, Ibanez, and others.
The gauges are Power 55-110: the low E string is 0.110 inch, the A string 0.090 inch, the D string 0.075 inch, and the high G string 0.055 inch.
Cobalt strings are more corrosion-resistant and retain their tone longer than pure nickel strings. They offer roughly 30-50% longer lifespan before losing brilliance.
The package includes a set of four strings (E, A, D, G) in Power 55-110 gauge, packed in a resealable package.
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