---
product_id: 1363496
title: "Ernie Ball Super Slinky Cobalt Electric Guitar Strings, 9-42 Gauge (P02723)"
brand: "ernie ball"
price: "€ 25.82"
currency: EUR
in_stock: true
reviews_count: 8
category: "Ernie Ball"
url: https://www.desertcart.fi/products/1363496-ernie-ball-super-slinky-cobalt-electric-guitar-strings-9-42
store_origin: FI
region: Finland
---

# 9-42 Super Slinky gauge for effortless playability Cobalt alloy for max magnetic pickup response Made in California with premium materials Ernie Ball Super Slinky Cobalt Electric Guitar Strings, 9-42 Gauge (P02723)

**Brand:** ernie ball
**Price:** € 25.82
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your tone, shred with ease, and never miss a beat!

## Quick Answers

- **What is this?** Ernie Ball Super Slinky Cobalt Electric Guitar Strings, 9-42 Gauge (P02723) by ernie ball
- **How much does it cost?** € 25.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/1363496-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

- • **Enduring Legacy:** One of the most popular Slinky sets for decades—join the elite players who trust it.
- • **Dynamic Sonic Range:** Experience crisp highs, strong lows, and harmonic richness that cut through the mix.
- • **Pro-Grade Craftsmanship:** Handcrafted in California with the freshest, highest-quality materials.
- • **Ultra-Smooth Playability:** Super Slinky 9-42 gauge strings glide effortlessly for fast riffs and solos.
- • **Unmatched Magnetic Power:** Cobalt alloy boosts pickup output for richer tone and clarity.

## Overview

Ernie Ball Super Slinky Cobalt Electric Guitar Strings (9-42 gauge) deliver superior magnetic response and dynamic range thanks to their innovative cobalt alloy. Engineered for professional guitarists seeking crisp highs, powerful lows, and ultra-smooth playability, these strings are handcrafted in California and have been a top choice for decades.

## 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 new 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: Sound amazing and feel amazing - I was very scheptical of what these would sound like compared to the hybrid set on my Ibanez, I have A Dimarzio Super Distortion at the neck and a Dimarzio Pro Track in the middle and a Dimarzio x2n at the bridge and the hybrid set sounded good but did have that extra part that was missing in the articulation of heavy riffs and stuff and some of the low end was more muddy sounding and seemed to feel a little off when you set the action and so forth, so i tried out these extra slinky and these blow my mind, its like it still does that low end but it has that extra articulation now with that low notes you get, its insane, and alot easier to pull of pinch harmonics and riffs, ultra smooth fret slides, i am super picky on the guitar, i have my frets polished at 12000 mirror like finish and these just glide so smooth on the frets. If you are ultra scheptical about what strings to get and see so many out there and I am glad i found these as these seem more than good enough for me, now it makes me too addicted to Improv playing again with drum beat in background then playing pc games and stuff :)
Review: Great Strings - Like the lively sound and easy playability.

## Features

- Cobalt produces a stronger magnetic relationship between pickups and strings than any other alloy previously available
- 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 California, USA with the finest and freshest materials

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0078YFA1A |
| Best Sellers Rank | #258 in Musical Instruments ( See Top 100 in Musical Instruments ) #6 in Electric Guitar Strings |
| Body Material Type | Cobalt |
| Brand | Ernie Ball |
| Brand Name | Ernie Ball |
| Coating Description | Cobalt |
| Color | Super (9-42) |
| Customer Reviews | 4.7 out of 5 stars 2,149 Reviews |
| Finish Type | Uncoated |
| Global Trade Identification Number | 00749699127239 |
| Instrument | Electric Guitar |
| Item Type Name | Electric Guitar Strings |
| Item Weight | 3.2 Ounces |
| Manufacturer | Ernie Ball Music Man |
| Manufacturer Part Number | 2723 |
| Material Type | Cobalt |
| Model Name | Super Slinky |
| Model Number | P02723 |
| Recommended Uses For Product | Electric Guitar |
| String Gauge | .009 |
| String Material Type | Cobalt |
| UPC | 749699127239 |
| Unit Count | 1.0 Count |
| Warranty Description | Warranty against manufacturer warranty. |

## Product Details

- **Brand:** Ernie Ball
- **Color:** Super (9-42)
- **Instrument:** Electric Guitar
- **String Gauge:** .009
- **String Material Type:** Cobalt

## Images

![Ernie Ball Super Slinky Cobalt Electric Guitar Strings, 9-42 Gauge (P02723) - Image 1](https://m.media-amazon.com/images/I/81pePX+cJ1L.jpg)
![Ernie Ball Super Slinky Cobalt Electric Guitar Strings, 9-42 Gauge (P02723) - Image 2](https://m.media-amazon.com/images/I/71Ltn9aNgfL.jpg)
![Ernie Ball Super Slinky Cobalt Electric Guitar Strings, 9-42 Gauge (P02723) - Image 3](https://m.media-amazon.com/images/I/31DVzNTAp7L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sound amazing and feel amazing
*by T***Y on November 7, 2025*

I was very scheptical of what these would sound like compared to the hybrid set on my Ibanez, I have A Dimarzio Super Distortion at the neck and a Dimarzio Pro Track in the middle and a Dimarzio x2n at the bridge and the hybrid set sounded good but did have that extra part that was missing in the articulation of heavy riffs and stuff and some of the low end was more muddy sounding and seemed to feel a little off when you set the action and so forth, so i tried out these extra slinky and these blow my mind, its like it still does that low end but it has that extra articulation now with that low notes you get, its insane, and alot easier to pull of pinch harmonics and riffs, ultra smooth fret slides, i am super picky on the guitar, i have my frets polished at 12000 mirror like finish and these just glide so smooth on the frets. If you are ultra scheptical about what strings to get and see so many out there and I am glad i found these as these seem more than good enough for me, now it makes me too addicted to Improv playing again with drum beat in background then playing pc games and stuff :)

### ⭐⭐⭐⭐⭐ Great Strings
*by B***P on December 14, 2025*

Like the lively sound and easy playability.

### ⭐⭐⭐⭐⭐ Fantastic strings
*by M***E on June 11, 2013*

I had watched a video review by Kenny Wayne Shepherd on these strings in which he stated he really liked them and put them on all his guitars. I thought there may be some endorsement issues associated but he did a thorough job of presenting his fondness. Therefore, I chose to go in for a set to try them. I was pleasantly surprised after I strung them on my Les Paul. First was the general feel of the strings which seemed to be smoother than others I had tried, including super slinky and rock and roll super slinky. During my stretch routine, these strings came to a stable point much faster than any other strings I have tried. I stretched them then played for about 20 minutes, expecting to re-tune across the board and found that the G, B, and E high strings were only slightly out (probably because of bigger bends). That amazed me. The clarity of the sound was another awesome feature. These are very crisp but have depth to the tone. They don't sound twangy or plinky. I found it rather difficult to get consistent pinch harmonics with other strings but was throwing them out all over the place with these. It's almost like the strings are alive. Amazing strings. I can't speak to the longevity yet but others have said they last longer and stay in tune longer. It appears they are engineered well enough to live up to that claim. The engineering and sound from these strings also allowed me to fine-tune my intonation better than I ever had before. Immediately after this review, I am ordering 5 more sets.

## 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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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-11*