---
product_id: 260171874
title: "Ernie Ball Super Slinky Cobalt Electric Guitar Strings - 9-42 Gauge"
brand: "ernie ball"
price: "€ 29.45"
currency: EUR
in_stock: true
reviews_count: 6
category: "Ernie Ball"
url: https://www.desertcart.gr/products/260171874-ernie-ball-super-slinky-cobalt-electric-guitar-strings-9-42
store_origin: GR
region: Greece
---

# Extended dynamic range Crisp, clear highs & strong lows Stronger magnetic output Ernie Ball Super Slinky Cobalt Electric Guitar Strings - 9-42 Gauge

**Brand:** ernie ball
**Price:** € 29.45
**Availability:** ✅ In Stock

## Summary

> 🎸 Elevate your tone with the power of Cobalt – play louder, clearer, and faster!

## Quick Answers

- **What is this?** Ernie Ball Super Slinky Cobalt Electric Guitar Strings - 9-42 Gauge by ernie ball
- **How much does it cost?** € 29.45 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/260171874-ernie-ball-super-slinky-cobalt-electric-guitar-strings-9-42)

## Best For

- ernie ball enthusiasts

## Why This Product

- Trusted ernie ball brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Made in the USA:** Crafted with precision and quality you can trust, supporting American manufacturing.
- • **Magnetic Mastery:** Cobalt alloy boosts pickup response for unmatched output and tone clarity.
- • **Slinky Flexibility:** Super Slinky 9-42 gauge offers effortless bends and fast playability.
- • **Harmonic Brilliance:** Experience rich harmonics with a balanced sound profile that cuts through the mix.
- • **Pro-Grade Durability:** Tin-plated high-carbon steel core ensures long-lasting performance and tuning stability.

## Overview

Ernie Ball Super Slinky Cobalt Electric Guitar Strings (9-42 gauge) feature a cobalt alloy that enhances magnetic interaction with pickups, delivering increased output, extended dynamic range, and a balanced sound with crisp highs and strong lows. Designed for professional and aspiring guitarists seeking superior tone and playability, these uncoated strings combine a tin-plated high-carbon steel core with cobalt winding for durability and vibrant harmonic response. Made in the USA, they remain a top choice for decades of reliable performance.

## Description

Engineered to maximize output and clarity, Ernie Ball Cobalt Slinky guitar strings are one of the latest innovations in string technology. Seeking to provide guitarists and bassists with a current 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.

Review: Excellent for D standard - Great for D standard tuning.
Review: Great for a begginers, Slinky easy to bend, plus brighten up a cheap muddy sounding guitar too! - Writing a review as I have 13 guitars here in my camper and 6 or so back home. So I am a bit impressed. My situation- I got these thinking the extra magnet and extra slinky attributes would help out my Harley (Fender Sonic Mustang wanna be) as it is a 24 scale and my wife already has the later one and this was cheaper - for basically if and when I take lessons because of the shorter scale length b/c the teacher can put me thru some runs, hammer ons with my pinky etc... You know Harley Benton has a tendency to sound muddy, so thought the extra magnetic drive wouldnt hurt. So... The strings as I was installing them stuck to the pickups b/c the magnetic pull was that strong, and are very slinky AND a bit beefyer fatter to the touch and I liked that too! Sound very good! Most likely from the magnetic quality.

## Features

- Cobalt produces a stronger magnetic relationship between pickups and strings, resulting in increased output.
- Cobalt electric guitar strings provide an extended dynamic range, incredible harmonic response, strong low end, and crisp, clear highs.
- Wound strings consist of Ernie Ball’s Cobalt alloy wrapped around a tin-plated high-carbon steel core wire.
- One of the original Slinky gauges, Super Slinky has remained one of the most popular electric guitar strings for decades.
- Made in the USA.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0078YFA1A |
| Body Material Type | Cobalt Alloy |
| Brand | Ernie Ball |
| Brand Name | Ernie Ball |
| Coating Description | Uncoated |
| Coating description | Uncoated |
| Color | Super (9-42) |
| Colour | Super (9-42) |
| Customer Reviews | 4.7 out of 5 stars 6,141 Reviews |
| Finish Type | Uncoated |
| Global Trade Identification Number | 00749699127239 |
| Included Components | Guitar Strings |
| Instrument | Electric Guitar |
| Item Type Name | Electric Strings |
| Item Weight | 0.06 Pounds |
| Manufacturer | Ernie Ball |
| Manufacturer Part Number | 2723 |
| Material Type | Cobalt |
| Model Name | slinky cobalt |
| Model Number | P02723 |
| Number of Items | 1 |
| Recommended Uses For Product | Electric guitar |
| Set Name | Super Slinky |
| Sound Profile | Balanced |
| String Gauge | .009, .011, .016, .024w, .032, .042 |
| String Material Type | Cobalt Alloy |
| String gauge | .009, .011, .016, .024w, .032, .042 |
| String material type | Cobalt Alloy |
| UPC | 749699127239 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Ernie Ball
- **Colour:** Super (9-42)
- **Instrument:** Electric Guitar
- **String gauge:** .009, .011, .016, .024w, .032, .042
- **String material type:** Cobalt Alloy

## Images

![Ernie Ball Super Slinky Cobalt Electric Guitar Strings - 9-42 Gauge - Image 1](https://m.media-amazon.com/images/I/81pePX+cJ1L.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent for D standard
*by M***O on 2 November 2023*

Great for D standard tuning.

### ⭐⭐⭐⭐⭐ Great for a begginers, Slinky easy to bend, plus brighten up a cheap muddy sounding guitar too!
*by E***E on 17 November 2025*

Writing a review as I have 13 guitars here in my camper and 6 or so back home. So I am a bit impressed. My situation- I got these thinking the extra magnet and extra slinky attributes would help out my Harley (Fender Sonic Mustang wanna be) as it is a 24 scale and my wife already has the later one and this was cheaper - for basically if and when I take lessons because of the shorter scale length b/c the teacher can put me thru some runs, hammer ons with my pinky etc... You know Harley Benton has a tendency to sound muddy, so thought the extra magnetic drive wouldnt hurt. So... The strings as I was installing them stuck to the pickups b/c the magnetic pull was that strong, and are very slinky AND a bit beefyer fatter to the touch and I liked that too! Sound very good! Most likely from the magnetic quality.

### ⭐⭐⭐⭐ Good strings for general playing.
*by A***N on 6 July 2020*

These strings sound great and cost good as well. Nothing to complain really. Found them tiny bit tougher than D'Dario Strings(difficult to bend), but that could be a personal observation and might vary.

## Frequently Bought Together

- Ernie Ball Super Slinky Cobalt Electric Guitar Strings, 9-42 Gauge (P02723)
- Ernie Ball Super Slinky Classic Pure Nickel Electric Guitar Strings, 9-42 Gauge (P02253)
- D'Addario Accessories Pro-Winder Guitar String Winder, Cutter, Bridge Pin Puller - All in One Guitar Tool - Black

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**Shop now:** [https://www.desertcart.gr/products/260171874-ernie-ball-super-slinky-cobalt-electric-guitar-strings-9-42](https://www.desertcart.gr/products/260171874-ernie-ball-super-slinky-cobalt-electric-guitar-strings-9-42)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-10-23*