Pricing and availability
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Store
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.jpeg?v=1783200117)
"I'm enjoying using my B3K on tour and recordings"
In this video from Darkglass Electronics, we see Bass Guitarist and founding member of Cannibal Corpse and Blotted Science, Alex Webster, running through his pedal board. The second item featured is a Darkglass Electronics Microtubes B3K Pedal. This video shows is 2013 European Tour board. In late 2014 he was given the B7K by Darkglass as an upgrade.
In this photo from Darkglass Facebook page there is a B3K on Troy's pedalboard.
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In this photo taken directly from Alex Venturella's instagram, is a full view of Slipknot's newest bassist's pedal shelves. To the far left and far right is a Darkglass Microtubes B7K as well as the Darkglass Microtubes B3K.
Justin Meldal-Johnsen is listed on the Darkglass Electronics website as an artist who uses the Microtubes B3K pedal. This compact pedal delivers a powerful overdrive sound with versatile parameters and an essential blend knob, making it highly recommended for bass players seeking dynamic tones.
From YouTube video, @ 4:25 "I love this bass overdrive, it's so good. I've also tried a lot of overdrives over the past few years. And this one is really cool 'cause it's really easy to blend the- the overdrive, like the distortion sound, as much as you can or as little as you wanted to. "
Paul D'Amour appreciates the "crisp character" of the Darkglass Electronics Microtubes B3K, as noted on the Darkglass Electronics artist page.
In the attached video is a rig rundown of Tim on tour with Dance Gavin Dance. At 1:03, the Microtubes B3K is shown on his pedalboard.
"The B3K is the definition of what an overdrive pedal should be, perfect addition to my live rig!"
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
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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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