The Best Bass Guitar Strings - 4 String Sets

The Highest Rated Bass Strings


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Bassists interact with their instrument mainly through the strings, and much of the resulting sound is born out of these interactions. So it is only proper to put more thought into the strings that you use.

And to help you do just that, here we feature the best rated 4-string bass guitar string sets. Divided into three gauge categories: Light, Medium and Heavy.

Since many bass string manufacturers have their own classification for labeling the weights of string sets, we've created our own standard classification as follows:

  • Light: .040 to .100
  • Medium: .045 to .105
  • Heavy: .050 to .110

There are many more gauge ranges than these available, including a wide selection of custom gauge sets, but those above are the ones we chose to focus on as they're some of the most commonly used, particularly by bassists who haven't yet settled on their favorite combination of individual string gauges.

Best Bass Guitar Strings - 4 String Bass Sets

Author & Contributors

Alexander BrionesAlexander Briones

I've written about and researched music gear for many years, while also serving as a music director at my local church, in addition to teaching guitar, bass and mentoring young musicians.

Best Light Gauge Bass Strings

Rotosound RB40


94 out of 100. Incorporating 350+ ratings and reviews.

Street Price: 

Rotosound RB40 Bass Guitar Strings


  • Can be too bright sounding at first


  • Bright and articulate initial tone
  • Deeper and warmer tone as it ages
  • Smooth and comfortable playing feel
  • Lasts long

It's common knowledge that bass strings are replaced less often than guitar strings, mostly because of the extra cost. But there are bassists, myself included, who prefer the feel and warmth of old strings. As such, I'm not too keen on fresh trebly tone, what's more important to me is long-term playability and how the tone warms up as the strings age. So far, the Rotosound RB40 have been meeting these considerations really well, with good tone, playability and longevity.

The Rotosound RB40 is a 40 to 100 gauge bass string set meant for long scale basses like the ever popular Precision bass. When freshly installed, it has a bright tonality that makes upper fret playing sound articulate. This early stage of the string's life will definitely appeal to those who are into trebly bass tones. As it gets more play time, it loses some of the zing. This is when I enjoy it more, sounding warmer and fuller, while retaining good articulation. It is easy to incorporate into band settings because it doesn't get in the way of the vocals and other instruments.

Rotosound RB40 Bass Guitar Strings
Rotosound RB40 strung on a workhorse '70s Yamaha Pulser PB-400

Playability is where the RB40 wins over other sets that I've used. Right at the start, all four strings have a smooth feel to them, which results in easy and comfortable playing. The gauge is also light enough for my fingers, without sacrificing tone and tactile feel. Understandably, it gradually loses its smoothness over time, but it is still quite easy on the hands after weeks or even months of use, as long as the strings are cared for properly.

Longevity is another aspect of that surpassed my expectation. For a non-coated set, the RB40 lasts for a long time, and have done so consistently. Even after 6 months, the strings still have good intonation and do not feel too worn out. The RB40 comes in a simple single foil packaging similar to other Rotosound strings. The packaging is light yet sturdy, and unlike paper packages, it's not prone to wear and tear.

Aside from initially sounding too bright, I really can't find other faults. Highly recommended for those with long scale basses.


  • Gauges: .040 .060 .080 .100
  • Material: Nickel Plated Steel
  • Coated: No

Rating Source Highlight

Website Source *Rating Value
Gearank Alexander Briones 96/100
*Displayed values are prior to the Gearank Algorithm's adjustments it makes when evaluating the source.

D'Addario ECB84 Chromes Flat Wound


96 out of 100. Incorporating 150+ ratings and reviews.

Street Price: 

D'Addario ECB84 Chromes Flat Wound Custom Light Electric Bass Guitar Strings


  • Not for those who prefer trebly strings
  • Different feel


  • Warm and mellow tone
  • Retains fresh tone longer
  • Less string noise
  • Deep bass

D'Addario continues to be a go-to brand for bass strings, with a long list of famous users including Victor Wooten, Ron Blair (Tom Petty and the Heartbreakers), Robert DeLeo (Stone Temple Pilots), Gary Willis (Tribal Tech) and many more.

The ECB84 in particular is a flatwound light gauge set, which follows after traditional design that provides a smoother feel and less noise when you slide your fingers. This smooth playing feel is not without fault though, because it feels substantially different, and the loss of grip makes it a bit harder to milk or bend.

Being a flatwound set, the ECB84 has a warmer and mellower tone compared to roundwound - more akin to acoustic stand-up bass. Note that it does have some treble when freshly installed, but not as much as roundwound. This makes it a great choice for those who prioritize deep bass sound over bright trebly tone. It also means that you won't have to wait for the strings to age to get warmer tone.

This set retains its tone for a long time, mostly because it already starts out warm sounding, so treble loss is not as noticeable.

If you're looking for a quality light gauge flatwound set, then check out the highly rated D'Addario ECB84.


  • Gauges: .040 .060 .080 .100
  • Material: Stainless Steel
  • Coated: No

Rating Source Highlight

Website Source *Rating Value
YouTube LanceShellzShelton 92/100
*Displayed values are prior to the Gearank Algorithm's adjustments it makes when evaluating the source.

Best Medium Gauge Bass Strings

Rotosound RS66LD Swing Bass 66 Stainless Steel Roundwound


96 out of 100. Incorporating 2300+ ratings and reviews.

Street Price: 

Rotosound RS66LD
At publication time this was the Equal Highest Rated Medium Gauge 4-String Bass Guitar String Set along with the La Bella 760FS.


  • Not for those who prefer deep bass
  • Thicker gauge requires more effort to play


  • Punchy and articulate fresh tone
  • Good low-end for a roundwound set
  • Retains fresh trebly for a long time
  • Familiar playing feel

The brainchild of engineer and musician James How, Rotosound strings have been the string of choice for many musicians, including noteable bassists such as John Entwistle of The Who, Cliff Burton of Metallica, Colin Greenwood of Radiohead, and many more.

Back in 1962, Rotosound released the first roundwound string set for electric bass - the Swing Bass 66 set. Fast forward to today, roundwound strings have become the go-to set for many bassists. The The RS66LD in continues the legacy of the original, while utilizing modern manufacturing and quality control methods.

This set continues to be a favorite in the medium gauge section, thanks to its bright tonality that produces more highs than other similarly spec'ed alternatives. It has a punchy yet articulate tone, which works well for many styles, including modern pop, dance and slap style music.

Being a thicker medium gauge set, it has deeper sounding lows compared to light gauge sets, but at the cost of being slightly harder to play. But even with its good bass, those who are into low-end thump and root notes will still find this set to be too bright sounding.

The strings retain fresh tone longer than usual, a testament to Rotosound's quality standards. Understandably, they will lose some of its zing as they age.

The Rotosound RS66LD Swing Bass 66 is a great set to get if you're looking for a slightly brighter sounding medium gauge set.


  • Gauges: .045 .065 .080 .105
  • Material: Stainless Steel
  • Coated: No

La Bella 760FS Deep Talkin'


96 out of 100. Incorporating 450+ ratings and reviews.

Street Price: 

La Bella 760FS Deep Talkin' Bass String Flatwound (Medium)
At publication time this was the Equal Highest Rated Medium Gauge 4-String Bass Guitar String Set along with the Rotosound RS66LD.


  • Not for those who prefer trebly tone


  • Hand-polished flat windings
  • Premium smooth feel
  • Deep and rich tone
  • Ideal for older bass models

The La Bella is seen as the go-to brand when it comes to flatound bass strings, and the 760FS Deep Talkin' is a good example of why they are successful - its a great sounding set that opens up fresh and lasts long.

It utilizes stainless steel as its main material, with a standard scale length of 37 inches. But what sets it apart is its hand-polished flat windings, which give it a premium smooth feel. This premium feel has made the 760FS a favorite among fretless bass players. The downside to its handcrafted quality is that it requires more production hours, which in turn drives up the price. Obviously, this set is not for those who are not into flatwound strings.

As a flatwound set, the La Bella 760FS sounds the part, having a deep and rich sound that suits older bass guitars like Precision and Jazz bass models. It also holds its fresh tone for weeks, mostly because there's not much treble to lose in the first place.

It ships in what the company calls "MAP" or Modified Atmosphere Packaging that allows for longer shelf life.

The La Bella 760FS gives you the true feel and tone of a flatwound set, highly recommended for those who want to branch out from roundwound strings.


  • Gauges: .045, .065, .085, .105
  • Material: Stainless Steel
  • Coated: No

Rating Source Highlight

Website Source *Rating Value
YouTube Juan Modesto 95/100
*Displayed values are prior to the Gearank Algorithm's adjustments it makes when evaluating the source.

Best Heavy Gauge Bass Strings

Rotosound RS66LE


93 out of 100. Incorporating 300+ ratings and reviews.

Street Price: 

Rotosound RS66LE Long Scale Bass Strings


  • Harder to play
  • Extra-tension on the neck


  • Bright tone with extended low end
  • Huge projection and good sustain
  • Long lasting

The RS66LE follows after Rotosound's successful "Swing 66" stainless steel roundwound design, only this one is a heavy gauge. The label "long scale" refers to the string being designed to work for long scale basses like the P and J bass models.

As a roundwound stainless steel set, it sounds bright. But being a heavy gauge set, this brightness is balanced by extended low-end, thanks to the extra mass that each string has. This results in a huge sound that resonates and sustains better than other heavy gauge sets.

The downside to the extra mass is increased string tension, which requires extra playing effort. This is the reason why heavy gauge bass strings are seldomly used. Note that these strings apply increased pressure on the bass, so it is best to make sure that your instrument is compatible with heavy sets before going with this one.

Being thicker also means that this set stays fresh sounding, and lasts longer. Since they start up with good bass, tone degradation is not as obvious compared to bright sounding light gauge roundwound sets.

The Rotosond RS66LE is a no brainer for those who want to switch to a heavier set while keeping the ballsy tone of Rotosound roundwound strings.


  • Gauges: .050 .070 .085 .110
  • Material: Stainless Steel
  • Coated: No

Rotosound SH77 Steve Harris Signature


94 out of 100. Incorporating 325+ ratings and reviews.

Street Price: 

Rotosound SH77 Steve Harris Signature Monel Flatwound Long Scale Bass Guitar Strings
At publication time this was the Highest Rated Heavy Gauge 4-String Bass Guitar String Set for the 3rd Edition in a row!


  • Not easy on the hands
  • Need heavy gauge compatible bass


  • High tensile strength
  • Hard hitting warm bass tones
  • Smoother playing feel
  • Great for metal and rock

The SH77 is a result of Iron Maiden's Steve Harris' and Rotosound's long history of working together. This set is designed to meet the expectations of Steve, and is the set that he uses for his main 4-string bass guitar.

An important distinction that this string has is the use of Monel as its main material. Monel is a nickel alloy that was very popular back in the early days of steel strings, known for its high tensile strength and resistance to corrosion. These days, manufacturers have gone with cheaper steel alloys, but there are still a few that offer monel strings, albeit at higher prices.

This set has flat windings, which gives it a warm tone that suits the style of Steve, and it gives it a smoother playing feel. The drawback to a heavy gauge flatwound is that strings are stiffer, which increases the difficulty of bending and vibrato. The extra tension can also be tough on the structural stability of your bass, so best check if your bass can actually handle heavy strings before trying this out.

As expected, this set gets the heavy hitting bass tones of Iron Maiden right. And as such, it fits in nicely for styles that require hard hitting bass lines like metal and rock. Thanks to its high tensile strength and heavy gauge, this set is fit for those who use lower tunings.

The Rotosound SH77 is the set to get if you've got the bass and skills to handle heavy strings for heavy rock and metal playing.


  • Gauges: .050 .075 .095 .110
  • Material: Monel
  • Coated: No

Rating Source Highlight

Website Source *Rating Value
AudioFanzine MountAnDewMe 100/100
*Displayed values are prior to the Gearank Algorithm's adjustments it makes when evaluating the source.

Things to Consider when Buying Bass Guitar Strings

If you’re looking to learn more about bass guitar strings, check out the sections below. We’ll cover things like how string gauges and materials change your tone, as well as how to find the right strings to get the tone you want.

Bass String Gauge Explained

When we talk about “gauge”, we’re referring to how thick the strings are. So, for example, when someone says “heavy gauge strings” they’re talking about strings that are thicker than what you’d normally encounter.

The heavier the string, the harder it’s going to be to play because the string itself is thicker it takes more tension to get it up to pitch, and the more tension a string is under the harder it is to press down. The opposite is true with lighter gauge strings, which are significantly easier to play than heavy gauge strings.

Heavy and light gauge strings also sound different. The heavier the gauge of string the warmer it’s going to sound, and it’s also going to produce a stronger signal (which means it will be louder coming through an amp). Lighter strings are the opposite, so they’re going to be brighter and produce a quieter signal.

The following table lists gauges of strings that can be found in various standard (non-custom) sets. Note that these aren't an official standard and different manufacturers make sets with different string gauges even though they use the same name such as 'Heavy' or 'Light'.

Bass String Sets and their String Gauges
Extra Light .030 .050 .070 .090
Light .040 .060 .080 .100
Medium .045 .065 .085 .105
Heavy .050 .070 .090 .110
Extra Heavy .055 .075 .095 .115

String Materials

Strings are made from a variety of different materials. Below we’ve listed a few of the most common ones, and how they sound in relation to one another.
  • Stainless Steel
    Stainless steel guitar strings are the brightest sounding electric bass guitar string. Because they’re made from stainless steel, they’re also more resistant to corrosion than a similarly constructed string made from nickel.
  • Pure Nickel
    Pure nickel bass strings are significantly warmer than steel guitar strings. They’re great if you’re looking to emulate vintage bass tones, though they do lack the punch and clarity you get with stainless steel bass guitar strings.
  • Nickel-Plated Steel
    Nickel-plated steel strings are a great compromise between pure nickel and stainless steel guitar strings. They have a great combination of punch and warmth, though it should be noted that they aren’t as corrosion resistant as stainless steel strings.

Flatwound vs. Roundwound

Flatwound and roundwound refers to a string's winding. Winding is the wraps of wire on the outside of a string. Roundwound, the most common winding, feels textured like the edge of a quarter. Flatwound is smoother (though still slightly textured).

Roundwounds have a brighter tone and more pop than flatwound strings, making them a good choice for those of you who are looking for a brighter and more aggressive tone. Flatwound strings are very warm and thumpy, which makes them great for smooth, melodic bass lines. And because they’re not as textured, less dirt and oil sticks inside of their grooves; making them last longer.

Hex vs. Round Core

Just like the wrapping of your string, your string’s core is also going to have an impact on your tone. Hexcore strings, the most common type of string, have a hexagonal surface. Roundcore strings look like a piece of spaghetti.

The main benefit of roundcore strings is that they’re easier to play. The wrapping is looser, so the string is under less tension. However, the does also mean that they don’t have the articulation or punch of hexcore strings (though this might be a bonus if you’re looking for a warmer tone!).

Coated Strings

Coated strings are strings that are coated in a polymer to increase their lifespan. Coated strings are a controversial topic in guitar playing circles, with some loving their increased longevity and others feeling that the coating robs strings of their tone.

We wouldn’t necessarily say that coating a string hurts its tone, but it definitely does cause some high-end loss. This isn’t really a bad thing, but it’s something to be aware of. If you like really warm sounding strings, a coated set might be right up your alley. Conversely, if you want a really bright tone from your strings you might be better off going with a non-coated alternative.

Matching Your Strings to What You Want to Play

A lot of bassists ask, “What strings should I use if I want to play X genre?”. And that’s a good question to have, because it stands to reason that if strings have certain characteristics based off of what they’re made from then there should be a clear cut answer to which string is best for a given situation, right?

Well, it’s not quite that simple. The main thing to know is that you have to balance the tone of your strings with the tone of your amp and your guitar. So, say you want to play jazz. If you have a darkly voiced bass and amp, going with pure nickel flatwounds might make your tone too muddy.

With that being said, here is a table below that shows which strings have the potential to work in a given situation. But before you make up your mind which set is right for you, be sure to double check how your bass/amp sounds compared to how you want it to sound.

Genre Gauge String Material Core
Slap Light to Medium Stainless Steel Hex
Jazz Medium to Heavy Pure Nickel Round
Country Medium to Heavy Pure Nickel Round
Rock / Metal Light ot Medium Stainless Steel Hex
Funk Light to Medium Stainless Steel Hex

Best Bass Strings Selection Methodology

The first edition was published in 2017.

When we set out to create this guide, we knew that we had to limit our scope because of the many material, gauge and design variations that are available. As such, we decided to stick to basing the guide on the most commonly used gauges: Light (.040 to .100), Medium (.045 to .105) and Heavy (050 to .110).

This edition required the processing of over 17,900 reviews and ratings (a 26% increase over the previous edition) for 26 bass string sets that made it onto our short-list - you can see them all in the Music Gear Database. All these data were processed by the Gearank Algorithm which provided us with the rating scores out of 100 that we used to recommend only the highest rated options for the three gauge ranges. For more information about our methods see How Gearank Works.

About the Author and Contributors

Here are the key people and sources involved in this guide's production - click on linked names for information about their music industry backgrounds.

Lead Author & Researcher

Alexander BrionesAlexander Briones

I've written about and researched music gear for many years, while also serving as a music director at my local church, in addition to teaching guitar, bass and mentoring young musicians.

When supervising rehearsals and arranging for performances, a big chunk of my task is to keep musicians and instruments from overstepping their bounds. This often includes keeping the bass from overwhelming the mids and highs with an overly trebly tone. For this reason, I usually prefer warmer sounding strings, and if that's not available, I recommend adjustments to make the tone deeper and easier to manage.


Mason Hoberg: Supplemental writing.
Jason Horton: Editing and Illustrating.


Main/Top Image: Compiled using photographs of the Rotosound RS66LE, D'Addario ECB84 and DR Strings Pure Blues bass string sets.

The individual product images were sourced from websites, promotional materials or supporting documentation provided by their respective manufacturers.


Nice comparison, but saddens

Nice comparison, but saddens me not seeing amazing brands like Dean Markley's. Those gave new life to my Stingray. Cheers!

Rotosound 66 had the best

Rotosound 66 had the best tone I ever heard but too many dead strings right out the pack. I switch to Hi-Beams while the tone isn't as good as Rotosound its close and I never got a dead string.

I have a ‘64 Supro Pocket

I have a ‘64 Supro Pocket Bass with a 25” scale. There is 2” of clearance between the strings’ ball end of the trapeze tailpiece to the floating bridge. What specific brand and model black tapewound strings will fit on this bass, so that the silk on either end will not touch the nut and bridge? Thank you.
Reply to :

Good article but I was hoping

Good article but I was hoping it would mention one of the key benefits of flatwounds. I play with a pick and Chrome flatwounds. They make a lot less noise when your fingers run along the string and make minimal pick noise. They are also quite punchy when played with a pick. In fact, with active pickups and a pick they can be as punchy as any finger plucked string.

Thanks for the heads up -

Thanks for the heads up - that now gets a mention in our February 2020 update.

There are advertising links

There are advertising links to both Sweetwater and Amazon (the blue buttons with their names on them) on this page, but neither of those two companies were involved in the process to select the sets of bass strings that we recommended.

As with all our guides, you can see how we made our selections in the Methodology section and additional information is available in How Gearank Works.

Actually, D'Addario makes

Actually, D'Addario makes Fender's strings. And you should mention Flatwounds are easier on the fingers and less noisy.