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The Growler IV is an excellent instrument, offering a distinctive sound and vibe of its own, with a level of playing comfort that is tough to beat for this price. On this evidence, Gibson's relaunch of Tobias deserves to succeed – thankfully, it's clear that real effort has gone into doing the name justice.
Pros
+
Characterful tones with a wide range of adjustment.
+
Astonishing playing comfort.
+
High quality build and custom-shop vibe.
Cons
-
Could in fact be too lightweight for some players.
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Our expert reviewers spend hours testing and comparing guitar products so you can choose the best for you. Find out more about how we test.
Don’t adjust your set – Tobias bass guitars really are back. The revered small-shop brand was purchased by Gibson in 1990, finding a new audience, but very little has been done with the name since the turn of this century.
Company founder Michael Tobias moved on in the mid-'90s and started his now well-established MTD brand, while the original basses bearing his name have maintained a cult following during their time off the price lists.
For 2025, Gibson has re-introduced Tobias to the landscape, with Indonesian-built versions of the neck-through Classic, and two bolt-on models originating from the early Gibson era - the Killer B, and the Growler.
All models are available as either four or five-string basses. The model I have today, though, is perhaps the simplest expression of a 2025 Tobias bass - a four-string version of the company’s single-pickup design: the Growler.
(Image credit: Future/Olly Curtis)
Introduced in 1995 (so always a Gibson-era product), the Growler was designed by Tobias R&D/product specialist Jim Burke, going on to become a popular model.
It was inspired by the time-honored Music Man StingRay blueprint, but with tweaks including a two-octave fingerboard and its own preamp and pickup design created with Bartolini offering greater control over the single-pickup's tonality. Happily, that unique circuit has been replicated here, as we’ll see.
Specs
(Image credit: Future/Olly Curtis)
Price: $1,399/£1,399/€1,599
Made: Indonesia
Type: Four-string active bass
Body: Paulownia
Neck: Three-ply maple and purpleheart, bolt-on, asymmetrical profile, dual-action truss rod
Electrics: Bartolini MM42CBJD3 quad-coil pickup, volume control, centre-notched pickup blend control, stacked bass/treble boost/cut for rear coils, stacked bass/treble boost/cut for front coils, three-position mid frequency switch for rear coils, three-position mid frequency switch for front coils
Weight: 6.2lb/2.8kg
Options: The Growler V five-string is $1,499 in Satin Natural.
Left-handed: Satin Natural only
Finishes: Satin Natural (pictured), White Pearl and Black Pearl
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Not everything is as it was, however. For the Growler’s offset body, the original ash has been replaced by paulownia (two pieces, neatly center-joined). This wood has been on the fringes of the industry for a couple of decades, with several makers having dabbled with it - it’s notably fast-growing, making it an easily-available, ecologically sound choice.
The neck is maple and purpleheart, crowned by a dark, straight-grained wenge fretboard with no inlays. It all adds up to a sleek, minimalist aesthetic, a good-looking instrument which should appeal to fans of 'modern' bass designs - Tobias, of course, having originally helped to popularize that style.
Notwithstanding a small gap in the neck pocket by the bottom horn, overall build quality is tight - with a neat control cavity, and premium hardware from Gotoh (Compact tuners) and Babicz (FCHZ4 bridge).
Playability
(Image credit: Future/Olly Curtis)
Playability rating: ★★★★★
Thanks to the body’s long top horn, it balances extremely well. It also rings like a tuning fork…
A defining characteristic of paulownia is its low mass, and so this Growler is absolutely feather-light, barely over 6lbs - quite a change if you were expecting a dense ash-bodied bass (the attractive grain of this example could easily be mistaken for it, in fact).
Consequently, alarm bells rang in my head as regards on-strap balance, but in fact, thanks to the body’s long top horn, it balances extremely well. It also rings like a tuning fork - a pleasing, lively acoustic response, which should bode well for when it's plugged in…
(Image credit: Future/Olly Curtis)
The neck showcases Tobias’s signature profile, a rounded asymmetrical carve with a thicker bass side to support the thumb when holding down lower notes, and a noticeably slimmer treble side for agile higher-register playing. It’s a great profile - one might be pleasantly surprised by how natural it feels from the off.
Despite the very comfortable weight and balance, it remains possible that some players will find the flyweight paulownia body to be less substantial than they're used to - but those concerns lessen after you lose a few hours playing this bass and realize how untaxing you’ve found the whole experience, with the comfortable shape, low weight and ergonomic neck.
Sounds
(Image credit: Future/Olly Curtis)
Sounds rating: ★★★★½
The electrics also offer much variety to keep you engaged. The single humbucker might lead you to expect a simple StingRay derivative - not so fast on that. It’s a Music Man-sized pickup, yes, but with four coils instead of two.
Bernard Edwards or even Joe Dart fans will find plenty to enjoy here
There are separate two-band EQs for each half of the pickup, and a pair of three-way switches for setting midrange frequencies - which designer Burke originally termed the ‘slap switch’. Lastly, a volume control, and a centre-notched pot for panning between the two halves of the pickup.
Those mid-frequency switches provide a lot of variation on their own - from full-bodied low-mids to a pronounced scoop. These switches and the EQ knobs should be considered together, as some switch positions benefit from further adjustment. And don’t discount that pan pot either - this ended up being vital to unlocking the Growler’s versatility.
(Image credit: Future/Olly Curtis)
Followers of Rage Against the Machine and Faith No More will love how the scooped EQ helps higher-gain tones retain awesome clarity and aggression.
But panning between two halves of the same pickup - surely that's a bit of a waste of a feature? What can really be so different between the two when they sit directly next to each other?
You might think so – before you dial-in the EQ of each side separately, and particularly, engaging the switches. Setting the back half of the pickup for a scooped, aggressive bark, and dialing-in a warmer, more mid-heavy tone on the 'neck' side, the Growler comes into its own.
That former setting, at the bridge end of the pickup, is a magic bullet for technical slap parts when played with a clean, compressed tone.
The titular ‘growl’ really comes out with an overdriven signal – followers of Rage Against the Machine and Faith No More will love how the scooped EQ helps higher-gain tones retain awesome clarity and aggression. The same can be said for pick players of heavier styles.
(Image credit: Future/Olly Curtis)
Meanwhile, the other side of that Bartolini can bring out warmth and punch that lends itself to cleaner, fingerstyle funk, disco and pop – Bernard Edwards or even Joe Dart fans will find plenty to enjoy here.
And far from just sounding good at those two extremes of the pan pot, these settings also blended very effectively - in dead-centre, we ended up with a punchy, defined tone that really does offer the best of those two worlds.
Verdict
(Image credit: Future/Olly Curtis)
So, lightweight comfort, a surprising variety of sounds, quality construction, and a unique custom-shop aesthetic, all on a bass that still effectively sits in the mid-priced sector.
It's also nice to see Gibson engaging with the heritage of one of its lesser-spotted brands, bringing a cult-classic bass back into the limelight. Some players might find the incredibly light weight disconcerting, but others will marvel at how it practically disappears underneath the hands, facilitating contented, relaxed playing for hours on end, particularly for long live sets.
Guitar World verdict: The Growler IV is an excellent instrument, offering a distinctive sound and vibe of its own, with a level of playing comfort that is tough to beat for this price. On this evidence, Gibson's relaunch of Tobias deserves to succeed – thankfully, it's clear that real effort has gone into doing the name justice.
Swipe to scroll horizontally
Ratings scorecard
Test
Results
Score
Build quality
Super lightweight – maybe too light for some – this is a thoroughly decent build albeit with that quibble with the neck pocket.
★★★★☆
Playability
Faultless. Great asymmetrical neck carve.
★★★★★
Sounds
You've got funk and pop, rock and pop, and when you add some drive it reminds you why it's called the Growler.
★★★★½
Overall
A welcome return for a subtly refreshed cult bass with a lot of contemporary appeal.
★★★★½
Also try
Sterling by Music Man Ray34 Price: $879/£1,099/€1,150 The original StingRay blueprint, reworked here as a fantastic mid-priced four-string that stands up favourably to much more expensive basses.
Ibanez BTB1835 Premium Price $1,799/£1,379/€1,425 An example of Ibanez's long-running take on the boutique neck-through bass, offering a huge spec for its price – there's no four-string model though!
Sandberg California Central 4 Price $1,961/£1,499/€1,727 Built in Germany, this is a more classically Music Man-inspired bass promising hand-crafted quality at near enough mass-produced prices.
Hands-on videos
Gibson
Introducing the Tobias Growler IV & V bass guitars - YouTube
