Darkglass Microtubes B7K Ultra


The Microtubes B7K Ultra features all the versatility and sonic possibilities its predecessor is known for plus amazing features: (1) A dedicated Footswitch to engage the overdrive section independently. (2) A Master volume to control the overall unit level. (3) Three way toggle switches for each mid control, with a total of 6 different mid frequencies at your disposal the B7K Ultra allows you to create and tailor your tone to perfection: From crisp, punchy clean preamp to obliterating high gain distortion, and everything in between. The B7K is an universal tone crafting machine.

In stock

Darkglass Microtubes B7K Ultra
Darkglass Microtubes B7K Ultra 459,00 

The Darkglass Microtubes B7K Ultra is a game-changing bass overdrive and preamp pedal that will revolutionize your sound. This versatile pedal offers an array of tonal possibilities, making it an essential tool for any bassist seeking a distinctive and powerful sonic signature.

At its core, the B7K Ultra provides a wide range of overdrive tones, from subtle grit to intense distortion. With its intuitive controls, you can shape your sound precisely to fit your musical style. This pedal doesn’t just add distortion; it transforms your bass into a roaring, harmonic-rich powerhouse.

As a preamp, the B7K Ultra lets you sculpt your tone even further. It offers a 4-band EQ with sweepable mid frequencies, allowing you to fine-tune your bass’s voice for any genre or playing situation. Whether you’re in the studio or on stage, this pedal ensures your bass sound will cut through the mix with clarity and authority.

Built with robust construction, the Darkglass Microtubes B7K Ultra is ready for the rigors of the road. Its compact design ensures it won’t monopolize your pedalboard space, making it a must-have for any bassist looking to take their sound to the next level.

Experience the transformational power of the Darkglass Microtubes B7K Ultra and unlock a world of distortion-laden, harmonically rich bass tones that will set you apart in any musical context.


Whereas the Level Knob controls the output of the overdrive section the Master volume adjusts the overall volume of the unit. Ideal for fine tuning the output on clean mode. It also serves as a DI level control.


Mixes the clean input signal with the overdriven signal. The clean signal remains at unity gain while the volume of the overdriven signal is set by the Level knob, allowing for fine control of the blend ratio.


Sets the volume of the overdriven signal.


Sets the amount of saturation in the overdriven signal.

Attack Switch

Sets the amount of treble content to saturate: The “Boost” setting emphasizes the treble content extra clarity and presence. The “Flat” position leaves this register untouched while the “Cut” position will reduce the amount of high frequencies being saturated.

Grunt Switch

Sets the amount of low frequency content to saturate by selecting between three different bass boost levels before the clipping stage.


+-12dB @ 100Hz

Lo Mids

+-12dB switchable 250Hz, 500Hz and 1kHz

Hi Mids

+-12dB switchable 750Hz, 1.5KHz and 3kHz


+-12dB @ 5kHz

Direct Output

A balanced version of the ¼” output, useful for running into PA’s or studio mixing consoles.


10.7×12 cm (4.21×4.72 in)


The Microtubes B7K Ultra has a current draw of 30mA. Only use a regulated 9V DC adapter with a center-negative plug. Due to ecological reasons it does not accept batteries. Unregulated power supplies and/or higher voltages may result in suboptimal noise performance and even damage your unit, voiding the warranty

Additional information


Darkglass Electronics

Effects Type

Bass-distortion, Distortion

Availability Now available in-store at
15 Kilkis Street Latsia Nicosia 2234

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