---
product_id: 274943227
title: "Ernie Ball Extra Slinky Cobalt Electric Guitar Strings - 8-38 Gauge"
brand: "ernie ball"
price: "A$27"
currency: AUD
in_stock: true
reviews_count: 5
category: "Ernie Ball"
url: https://www.desertcart.com.au/products/274943227-ernie-ball-extra-slinky-cobalt-electric-guitar-strings-8-38
store_origin: AU
region: Australia
---

# Cobalt alloy boosts magnetic output 8-38 gauge for versatile play Proudly made in the USA Ernie Ball Extra Slinky Cobalt Electric Guitar Strings - 8-38 Gauge

**Brand:** ernie ball
**Price:** A$27
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your tone, shred with ease — the future of guitar strings is here!

## Quick Answers

- **What is this?** Ernie Ball Extra Slinky Cobalt Electric Guitar Strings - 8-38 Gauge by ernie ball
- **How much does it cost?** A$27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/274943227-ernie-ball-extra-slinky-cobalt-electric-guitar-strings-8-38)

## 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

- • **Dynamic Sonic Range:** Experience crisp highs, deep lows, and harmonic clarity that elevate your sound.
- • **Premium Build Quality:** Tin-plated high-carbon steel core wrapped with Ernie Ball’s signature Cobalt alloy ensures durability and tone consistency.
- • **Ultra-Fast Playability:** Extra Slinky 8-38 gauge offers light tension for effortless shredding and smooth bends.
- • **Unmatched Magnetic Power:** Cobalt alloy creates a stronger pickup connection for louder, richer tones.
- • **Iconic American Craftsmanship:** Made in the USA, trusted by pros who demand excellence and reliability.

## Overview

Ernie Ball Extra Slinky Cobalt Electric Guitar Strings (8-38 gauge) feature a revolutionary cobalt alloy that enhances magnetic pickup response, delivering increased output, extended dynamic range, and superior harmonic clarity. Designed for fast, effortless play with extra light tension, these strings combine durability and premium American craftsmanship to meet the demands of professional guitarists seeking cutting-edge tone and 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: Eu gostei muito do timbre que essas cordas tem, é bem mais brilhante e tem um sustain maior do que a corda que estava usando antes. Com certeza vou comprar esse de novo.
Review: Loved the strings. Used it for the first time. Though from next time I have to choose 9s.

## 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.
- Extra Slinky brings extra light tension for fast and easy play across the fretboard.
- Made in the USA.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007NCVWNW |
| Color Name | Extra (8-38) |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,340) |
| Date First Available | 13 August 2012 |
| Item Weight | 18.1 g |
| Item model number | P02725 |
| Material Type | Steel |
| Number of Strings | 6 |
| Product Dimensions | 11.43 x 0.25 x 11.43 cm; 18.14 g |
| Size | Single Pack |
| String Gauge | Custom |
| String Material | Cobalt |

## Product Details

- **Brand:** Ernie Ball
- **Colour:** Extra (8-38)
- **Instrument:** Electric Guitar
- **String gauge:** Custom
- **String material type:** Cobalt

## Images

![Ernie Ball Extra Slinky Cobalt Electric Guitar Strings - 8-38 Gauge - Image 1](https://m.media-amazon.com/images/I/81UTEdg5WJL.jpg)

## Questions & Answers

**Q: Are these made from cobalt mined by dwarves in the mines of Moria? Someone on the internets said so.**
A: Now we know why ErnieBall cobalt strings make most magical sound vibrations 🎶mines of Moria, dwarves & elvin magic ✨

**Q: Are they better for finger-picking?**
A: I installed these strings on a 72 fender telecaster thinline with wide range pickups using a fender supersonic 60 watt tube amp and found the sound difference from the Ernie ball super slinky strings I usually use to be harsh. There was more treble then I wanted and an almost chimey sound from the higher notes. This is not a string suited for country music which is what I was playing. It accents the finger picking well by making each individual note stand out more clearly but the louder I played it started distorting and under distortion it was an unpleasant sound. Best stick to the tried and true Ernie ball slinky and super slinky for finger picking. In fact on my american start with single coils the slinky strings sound the best by far for country music. Tuffet to bend then super slinky but a much more rounded tonal quality then these cobalt strings. I hope this review helps.

**Q: are these strings round wound or flat wound?**
A: Strings are round wound.

**Q: Are the 3-packs individually wrapped packages that can be sold separately? Or is it 3 sets of strings in one package?**
A: The 3-packs come in one package, but you can separate them once you open up the package.If this was helpful, please consider purchasing from us. We can help with support after the sale as well. We have it in stock and ready to ship. - Pixel Pro Audio

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***D on 3 October 2025*

Eu gostei muito do timbre que essas cordas tem, é bem mais brilhante e tem um sustain maior do que a corda que estava usando antes. Com certeza vou comprar esse de novo.

### ⭐⭐⭐⭐⭐ Review
*by S***O on 16 November 2025*

Loved the strings. Used it for the first time. Though from next time I have to choose 9s.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 21 October 2024*

I’ve not tried this particular one before, usually opting for the Ernie ball 9’s ( pink pack) but I wanted to try the 8’s , they are pretty good to be fair , not broken one ( yet , and I do tend to dig in a bit) stay in tune very well, ( after a good stretch) good sound and a decent price, will buy again, not had them long enough to rust yet, but I play every day so that’ll keep it down

## Frequently Bought Together

- Ernie Ball Extra Slinky Cobalt Electric Guitar Strings, 8-38 Gauge (P02725)
- Ernie Ball Zippy Slinky Nickel Wound Electric Guitar Strings, 7-36 Gauge (P02217)
- Ernie Ball Extra Slinky Coated Titanium Electric Guitar Strings, 8-38 Gauge (P03125)

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**Shop now:** [https://www.desertcart.com.au/products/274943227-ernie-ball-extra-slinky-cobalt-electric-guitar-strings-8-38](https://www.desertcart.com.au/products/274943227-ernie-ball-extra-slinky-cobalt-electric-guitar-strings-8-38)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-05*