Pricing and availability
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Reviews
Price
Average Price: $232
High-end/Boutique
$70
$201+
Price Tier
Budget
Standard
High-end
Price History
Based on price data from 1 merchant for "Darkglass Electronics Microtubes B3K CMOS Bass Overdrive". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Introducing the Darkglass Electronics Microtubes B3K, a bass player's secret weapon. This versatile overdrive pedal offers a wide spectrum of tonality, from clean boost to gritty overdrive to full-blown distortion. With dedicated knobs for drive, blend, and level, you have complete control over your sound. Two switches allow for precise adjustments to the presence of treble and bass within the effect. This isn't your average overdrive pedal, it's specifically designed for the bass, making it a must-have for those who want to elevate their bass tone.
Key Features:
- Versatile overdrive pedal specifically designed for bass
- Knobs for drive, blend, and level for precise sound control
- Two switches for adjusting the presence of treble and bass
- Covers a wide spectrum of tonality, from clean boost to gritty overdrive to full-on distortion
- High-grade construction for reliable performance
Product specs
| Analog/Digital | analog |
| Power | 9V |
| Current Draw | 20ma |
Videos
Victor Hugo Targino
Darkglass Electronics Microtubes B3K - DEMO
Darkglass Electronics Microtubes B3K - DEMO
Victor Hugo Targino
Darkglass Electronics Micro Tubes B3K Bass Overdrive | Reverb Demo Video
Reverb
Pedal Demo - Darkglass B3K
Carlos Costa Bass
Faith No More - Zombie Eaters bass cover
Raphael Ferreira
Reviews
PROS
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Provides clear, brutal bass overdrive adaptable to any bass
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Versatile: from light distortion to heavy with note clarity
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Subtle dirt to aggressive overdrive with clean blend for low-end retention
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Blend knob allows precise wet/dry mix adjustments
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Retains bottom end well, even at high drive settings
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Solid construction for durability
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Boosts frequencies for clear note distinction in the mix
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Noiseless operation, no hiss even at high settings
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Recognized for its unique sound quality among bass distortions
CONS
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Pricey compared to similar products
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Knobs can be easily adjusted accidentally, affecting settings
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Generates noise when included in a pedal chain, may require a noise gate
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Darkglass Electronics Microtubes B3K CMOS Bass Overdrive.
Value and pricing
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Owners report second-hand prices around 250-300 AUD on Reverb, with occasional floor models available for 195 AUD.
Source
Use cases and applications
User experience
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Running the B3K in a stereo setup, with effects like delay to one amp and a dry signal to another, is a popular configuration among users.
Source
5.0 out of 5
Based on 3 Reviews and 28 Ratings
586
Awesome dirt pedal!
This thing definitely deserves the reputation it has. I had one of the new models on my board and regret ever taking it off. I recently got one of these older versions and it's starting to become my favorite general use drive pedal. It has a blend knob but I leave it all the way wet because it naturally has a lot of low end compared to other drives and is very articulate. If you are looking for a great drive pedal that will last a lifetime this is my recommendation.
68
Absolutely amazing sounding pedal
The only bass distortions that have a chance at beating this one are also made by Darkglass. Such a gnarly pedal.
88
Easy To Use But Massive Tone
Simple, easy to use distortion/overdrive pedal for bass and it's really good!
Artist usage
Add artist
In this tweet, you can see his pedalboard, and among them, you have this pedal.
A Darkglass Electronics Microtubes B3K CMOS pedal can be seen on Mike Hranica's pedalboard, in this photo, from his Tumblr.
Alex posted a photo about all of his pedals and there you can find the Darkglass Electronics B3k pedal
Max Lavelle uses the Darkglass Electronics Microtubes B3K bass effects pedal to achieve a powerful and aggressive tone with minimal adjustments. Featured on the Darkglass website, Lavelle praises the B3K for delivering the growl he seeks without compromising frequency, unlike many other overdrive pedals.
In this photo I took of Devin's pedals you can see a Darkglass B3K Bass Overdrive.
"Crushing live and in the studio. My Darkglass B7K and B3K give me the tone I've been searching for my whole life and a whole lot more. It it's cleans or grinding overdrive, Darkglass knows what bass players wants! My B7K has become my main DI box and the B3K is awesome as a boost or just a little more grind."
"The B3K just makes the basic tone of my bass so great and adds a really perfect, small amount of very treble-heavy overdrive"
He uses the Vintage Microtubes, but likes to keep his options open: “I love the B3K equally much… In the future, I might just have both in my pedalboard live, using the B3K for those heavier passages”
Ray Riendeau praises the Darkglass Electronics Microtubes B3K for its impressive tonal versatility and warm overdrive quality, as highlighted in the artist section on Darkglass's website.
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El Darkglass Electronics Microtubes B3K CMOS Bass Overdrive en la grabación del próximo album de Stick Men
"I have been using the Darkglass B7K and B3K live since 2012 and now in the studio as well. The B7K and B3K combination give me an aggressive tone that stays true to the natural tone of my basses pickups. Not only do I have the tone that I want but these pedals are road tested and have given me no issues, even after countless overseas trips."
Album Usage
The Darkglass Electronics Microtubes B3K CMOS Bass Overdrive has been featured on the following albums:
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Darkglass Electronics Microtubes B3K CMOS Bass Overdrive, it is most commonly used with the following gear.
Community setups
Show yours
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The Microtubes V2 is a revision of the original circuit, with an added tone knob and altered controls.
The Maelstrom is a DIY kit based on the Microtubes B3K, with an added dip switch ‘era’ control inspired by the vintage Microtubes.
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