Darkglass Microtubes B1K CMOS Bass Overdrive Pedal | No Limit Guitar Co, Idaho Falls
The Darkglass Microtubes B1K is a compact, all-analog bass distortion pedal that delivers the legendary Microtubes CMOS overdrive circuit in the most streamlined, pedalboard-friendly format Darkglass has ever offered. Built for bass players who want crushing, aggressive distortion without a complicated control scheme, the B1K packs a full suite of tone-shaping tools — including internal Tone, Blend, Grunt, and Mid Boost controls — into a mini pedal chassis weighing just 0.45 lbs. Whether you run it as an always-on foundation tone or a switchable dirt machine, this Darkglass bass overdrive pedal is a serious addition to any rig available now at No Limit Guitar Co in Idaho Falls.
Product Overview
The B1K is built around Darkglass's proven CMOS distortion topology — the same all-analog circuit architecture behind some of the most revered bass overdrive pedals in modern heavy music. The exterior keeps things deliberately simple: a single concentric Level/Drive knob handles the primary gain and volume relationship, while a single footswitch engages the effect. The compact aluminum enclosure measures just 2" wide x 4" deep x 1.75" tall, making it one of the easiest pedals to fit on a crowded pedalboard or tuck into a gig bag pocket. Standard 9V DC power (sold separately) and a 30mA current draw mean it plays nicely with virtually any power supply setup.
Lift the magnetic back panel and you'll find the B1K's secondary controls: a Blend knob that mixes the clean input signal with the overdriven signal at unity gain, a Tone control that operates as a variable low-pass filter sweeping from 3kHz to 8kHz, a Grunt switch that delivers a substantial low-end boost to thicken the fundamental, and an MBoost switch that adds a subtle 6dB push from 300Hz to 1kHz for cutting through dense mixes. The high-input impedance and low-output impedance design ensures the B1K integrates cleanly into any signal chain without tone suck or level mismatches — a detail that reflects Darkglass's engineering-first approach to pedal design.
The B1K is the first entry in Darkglass's new mini pedal lineup, designed by mechanical and electronics engineers focused on rugged reliability and accessibility without compromising the tonal DNA the brand is known for. For Idaho Falls bass players and players nationwide, No Limit Guitar Co is your source for Darkglass gear built to this standard.
Ideal For
- Bass players seeking the legendary Darkglass Microtubes distortion tone in the most compact, pedalboard-efficient format available
- Heavy music bassists — metal, post-rock, prog — who want crushing saturation with precise control over low-end weight and mid presence
- Players who prefer an always-on overdrive pedal that forms the core foundation of their bass tone rather than a switched effect
- Touring and gigging musicians who need a reliable, compact bass distortion pedal that travels light and integrates seamlessly into any rig
- Idaho Falls bass players looking for professional-grade bass effects pedals at a trusted local guitar shop
Key Features
All-Analog CMOS Distortion Circuit The B1K runs the same CMOS-based Microtubes distortion topology as Darkglass's larger flagship pedals — fully analog, with no digital modeling or approximation. The result is the same harmonically rich, aggressive overdrive character that has made the Microtubes circuit a modern standard in professional bass playing.
Concentric Level/Drive Knob The single concentric knob keeps the external control surface clean and intuitive — Level sets the output volume of the overdriven signal, while Drive controls the amount of saturation. It's a no-nonsense interface that gets you to your tone fast without menu diving or complex routing.
Internal Tone and Blend Controls Accessible via the magnetic back panel, the Blend knob mixes clean and overdriven signals at a ratio of your choosing, while the Tone control sweeps a variable low-pass filter from 3kHz to 8kHz — brighter counterclockwise, darker clockwise — shaping the high-frequency character of the distortion.
Grunt and Mid Boost Switches The Grunt switch engages a significant low-end boost that thickens the fundamental for tuned-down, heavy playing styles. The MBoost switch adds a focused 6dB lift from 300Hz to 1kHz, helping the bass cut through dense guitar and drum arrangements without simply raising overall volume.
High-Input / Low-Output Impedance Design Darkglass engineered the B1K with high-input impedance and low-output impedance to preserve signal integrity across the full chain — no tone suck, no level mismatch, and no impedance-related degradation whether it's first in the chain or buried in the middle of a complex pedalboard.
Mini Form Factor, Road-Ready Build At 2" x 4" x 1.75" and 0.45 lbs., the B1K is one of the most space-efficient serious bass distortion pedals on the market. The rugged enclosure is built to handle the demands of real-world gigging and touring without issue.
What's Included
- Darkglass Microtubes B1K CMOS Bass Overdrive Pedal
- 9V DC power supply sold separately
- Manufacturer warranty
- Note: Use only a regulated 9V DC center-negative adapter. Unregulated supplies or higher voltages may damage the unit and void the warranty.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Darkglass |
| Model | Microtubes B1K |
| Pedal Type | Distortion / Overdrive |
| Circuit Type | All-analog CMOS |
| External Controls | Concentric Level/Drive knob, 1x footswitch |
| Internal Controls | Blend, Tone (low-pass filter 3kHz–8kHz), Grunt switch, MBoost switch |
| Grunt | Low-end boost switch |
| MBoost | 6dB boost, 300Hz–1kHz |
| Input | 1 x 1/4" |
| Output | 1 x 1/4" |
| Power | 9V DC regulated, center-negative (sold separately) |
| Current Draw | 30mA |
| Width | 2.0" (50mm) |
| Depth | 4.0" (100mm) |
| Height | 1.75" (45mm) |
| Weight | 0.45 lbs. (205g) |
| Manufacturer Part # | B1K |
Get Your Hands on This Bass Overdrive Pedal Today
The Darkglass Microtubes B1K is in stock now at No Limit Guitar Co in Idaho Falls — stop by to hear it in action or contact us to confirm availability. If you've been looking for a way to bring legendary Microtubes aggression to your bass rig in the most compact and affordable format Darkglass has ever offered, this is it.