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Description

Unleash the full potential of your bass with the Darkglass MTB7K Microtubes B7K Ultra Overdrive Preamp Pedal. This powerhouse pedal marries pristine clarity with searing overdrive, making it a staple for bassists seeking a versatile yet robust tonal range. Whether you're laying down smooth grooves or cutting through the mix with aggressive riffs, the B7K Ultra adapts seamlessly to your playing style.

The pedal builds upon its acclaimed predecessor with enhanced features, including a dedicated footswitch that allows you to activate the overdrive independently, ensuring you have swift control over your sound dynamics. The four-band EQ offers precision tuning, while the six selectable mid-frequency positions provide unmatched flexibility in sculpting your bass tone. From deep, resonant lows to crisp, articulate highs, this pedal ensures every nuance of your playing is delivered with remarkable fidelity.

Essential for studio recording and live performances alike, the Darkglass MTB7K Microtubes B7K Ultra is crafted with the modern bassist in mind. Its sleek design and intuitive interface make it an indispensable tool for both professional musicians and budding artists eager to explore the depths of their sound.

Key Features:

  • Four-band EQ with independent control
  • Six selectable mid-frequency positions for tailored tone shaping
  • Grunt switch to emphasize low-end frequencies
  • Dedicated footswitch for separate overdrive activation
  • Versatile design suitable for studio and live use
  • Durable construction for long-lasting performance

Product specs

Brand Darkglass Electronics
Model Microtubes B7K Ultra
Finish Black, Black with Kraken
Year 2010s
Made In Finland
Categories Bass Effect Pedals, Preamps
Color Family Black
Pedal Format Standard

FAQs

What type of tone shaping options does the Darkglass Microtubes B7K Ultra offer?

The Darkglass Microtubes B7K Ultra features a 4-band EQ, allowing for precise tone shaping. It also includes a blend control to mix the clean and overdriven signals, providing a wide range of tonal possibilities for bassists.

Can the Darkglass Microtubes B7K Ultra be used for live performances?

Yes, the Microtubes B7K Ultra is well-suited for live performances, offering a direct output with a cab simulation feature for connecting directly to a PA system, ensuring a consistent and powerful sound on stage.

Is the Darkglass Microtubes B7K Ultra compatible with both active and passive basses?

The Microtubes B7K Ultra is designed to work well with both active and passive basses, providing versatile tone shaping and overdrive options regardless of your bass's pickup configuration.

Does the Darkglass Microtubes B7K Ultra require a specific power supply?

The Microtubes B7K Ultra operates on a standard 9V DC power supply with a current draw of 120mA, making it compatible with most pedalboard power solutions.

How does the overdrive on the Darkglass Microtubes B7K Ultra compare to other pedals?

The overdrive on the Microtubes B7K Ultra is known for its clarity and punch, maintaining the low-end presence while delivering a modern, aggressive tone that is favored by many bassists in rock and metal genres.

Darkglass Electronics

Darkglass Electronics

Microtubes B7K Ultra: in Depth demo by Chris Kollias

Video thumbnail for Microtubes B7K Ultra: in Depth demo by Chris Kollias by Darkglass Electronics

Microtubes B7K Ultra: in Depth demo by Chris Kollias

Darkglass Electronics

Darkglass Electronics

Reviews

PROS

  • Exceptional tone control with 4-band EQ and high/low mid adjustments

  • Versatile sound options from clean tones to crushing distortion

  • Blend knob allows precise control of dry/wet signal balance

  • Acts as a DI box, perfect for recording and live setups

  • High-end build quality ensures durability and reliability

  • Provides a modern metal bass sound, essential for rock/metal bassists

  • Offers both clean and distortion channels for layered sound crafting

  • Compact and pedalboard-friendly, replacing the need for bulky gear

  • Unique sound flavors, from modern tones to vintage SVT styles

  • Great for experimenting with different sounds during practice

CONS

  • Counter-intuitive layout of Grunt and Attack switches

  • Absence of an effects loop limits some connectivity options

  • Controls for lo and hi mids may be hard to access with larger fingers

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal.

Features and functionality

  • The B7K Ultra's switchable midrange frequency options are highly praised for enhancing tonal flexibility, especially in rock and metal genres.

    Source
  • The Microtubes X Ultra, a related Darkglass model, is highlighted for its versatile EQ and frequency controls, offering more tonal shaping options than simpler models.

    Source
  • The B7K Ultra V2 includes a headphone out, allowing for silent practice without an amp or cab, which is absent in the V1 model.

    Source

User experience

  • Owners recommend setting the blend knob between 12-2 o'clock to retain low end while achieving a cutting gain that penetrates live mixes effectively.

    Source
  • After six months of use, the B7K Ultra's range of tones continues to impress, showcasing its versatility beyond just metal genres.

    Source
  • Owners often pair the B7K Ultra with older amps, bypassing preamps entirely, indicating confidence in its standalone sound quality.

    Source
  • Owners report successfully using the B7K Ultra without a cab or amp for band practices, noting the convenience and effectiveness of direct connection.

    Source

Use cases and applications

  • Turning low and high mids to maximum in a live setting can create a powerful sound that stands out, likened to a "freight train" effect in jam sessions.

    Source
  • The B7K Ultra is often used with light drive settings for tonal sculpting, while heavier drive is typically managed with a separate pedal like the B3K.

    Source
  • Contrary to its metal-centric reputation, the B7K Ultra is used effectively for clean tone shaping and jazz, with mild saturation for dynamic play.

    Source
  • The pedal can be connected directly via XLR to a PA system for live performances, eliminating the need for an amp and cab.

    Source
  • The CabSim function can simulate various bass speaker cabinets, providing versatility in live settings without physical gear.

    Source

Comparisons

  • Some users find the B7K Ultra's tone too "clanky" compared to other Darkglass models like the Vintage Deluxe, noting personal preference in tone quality.

    Source
  • The B7K Ultra is praised for its modern metal sound, contrasting the classic tone of the SansAmp Bass Driver V2, which some prefer for a 70s vibe.

    Source
  • Some users find the Microtubes X Ultra's EQ more versatile than Tech21's offerings, leading them to favor it for its specific "flavor of dirt."

    Source

Software and compatibility

  • Users can customize the CabSim using the Darkglass Suite, with options to upload personal preferences for live performance sound.

    Source

Critic Reviews

Darkglass Microtubes B7K Ultra Review - Premier Guitar

premierguitar.com

The Darkglass Microtubes B7K Ultra impresses with its robust build and extensive tonal options, making it a go-to for bassists craving versatility. Its impressive EQ section and rugged design cater to both clean and aggressive tones, from subtle bite to heavy distortion. The pedal's flexibility is a highlight, but it doesn't come cheap, and the switch layout may confuse new users. While adjusting the drive can be time-consuming, the resulting tones are worth the effort. Overall, it stands as a worthy investment for serious players seeking a portable yet powerful preamp and overdrive solution.

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5.0 out of 5

Based on 3 Reviews and 15 Ratings

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spencerobrien

The GOAT for modern metal tone

Pair this with a Sansamp and you have a heavy AF tone. The midrange this pedal gives is unprecedented.

Roles:
imtiaz_ahmad

COOLEST STOMP

you don't need anything else live if you have this monster in your rig - amazing eq, drive options - great build

Roles:
Genres:
mechanisms

Amazing

Bought this about 4/5 months ago and I love it, it truly is the bass sound in my head:full, punchy, controlled overdrive. Worth every penny

Artist usage

Add artist
See how MISA uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

MISA

Bassist

Band-Maid

...
Verified via Photo

The Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal is used by bassist MISA, as evidenced by its visible placement on her pedalboard in the top right corner of the image provided by the source.

See how Adam Devonshire uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Adam Devonshire

Bassist

IDLES

...
Verified via Photo

Adam Devonshire confirmed via direct message that he uses the Darkglass MTB7K Microtubes B7K Ultra Overdrive Preamp Pedal on his pedalboard.

See how Brian Marshall uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Brian Marshall

Bassist

Alter Bridge

...
Verified via YouTube

In this video at 5:38, you can see his pedalboard. One of the pedals is the Darkglass Microtubes B7K Ultra

See how Alex Dean uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Alex Dean

Bassist

The Architects

...
Verified via Photo

Ali did the photo for the Instagram last year. "I've been using the @darkglasselectronics B7K for a while now and have never looked back, so obviously I had to get the Ultra version that they just released. I would implore any Bass players to have a look at what @darkglasselectronics have on offer, they are such versatile and well built pedals and are 100% worth buying!"

See how Will Putney uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Will Putney

Guitarist, Music Producer

Fit for an Autopsy

...
Verified via Photo

Will has a darkglass b7k ultra as part of his pedal collection

See how Daniel Kenny uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Daniel Kenny

Bassist

Suicide Silence

...
Verified via Photo

B7K Ultra shown on his instagram.

See how Sky Acord uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Sky Acord

Bassist

Twenty One Pilots

...
Verified via YouTube

The camera zooms in on it at 7:56. He presents it as a "Darkglass B7K" and from the camera angle you can tell it's the ultra model.

See how Conner Green uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Conner Green

Bassist

Haken

...
Verified via Photo

This is essentially my entire live rig now: the Darkglass B7K Ultra, Vintage Ultra, and Microtubes 900 amp. I'll be using all of these on upcoming Haken tours and Mike Portnoy's Shattered Fortress shows, and darn it, I'm excited! Perhaps a couple demos are in order. Thank you,

See how Jihea Oh uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Jihea Oh

Bassist, Keyboardist

Hillsong United

...
Verified via Photo

In this Instagram picture, Jihea is using a Darkglass B7K Ultra on the #ThereIsMoreTour.

See how Luis Guillermo Espinosa De Los Monteros uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Luis Guillermo Espinosa De Los Monteros

Bassist, Keyboardist

...
Verified via Photo

In addition to the image provided, Luis Guillermo Espinosa De Los Monteros can be seen using the Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal in the video at this timestamp: youtu.be/7RYHdkyJvzo?t=857.

See how Matt Deis uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Matt Deis

Bassist

CKY

...
Verified via YouTube

This pedal can be seen on his pedalboard early on in the interview.

See how Morgan Sinclair uses Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal

Morgan Sinclair

Guitarist, Bassist

The Architects

...
Verified via Photo

Morgan shows the Darkglass B7k Pedal that was sent to him by Darkglass

Album Usage

The Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal 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 B7K Ultra Bass Preamp Pedal, it is most commonly used with the following gear.

Community setups

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zvn777

zvn777

Gear IQ 947

zvn777

zvn777

Gear IQ 947

hikoshi

hikoshi

Gear IQ 72

valbass96

valbass96

Gear IQ 228

1 alternative for Darkglass Electronics Microtubes B7K Ultra Bass Preamp Pedal, curated by the Equipboard community.

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V2 adds an additional cab sim and headphone out feature to the Microtubes B7K Ultra.

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