Darkglass Electronics B7K Microtubes Bass Preamp Pedal User Manual Product Information
- February 10, 2024
- Darkglass Electronics
Table of Contents
B7K Microtubes Bass Preamp Pedal
Product Information
Microtubes B7K – The Black Beast
The Microtubes B7K is a high-quality bass overdrive pedal
designed to provide exceptional tone and versatility. With its
powerful features and intuitive controls, this pedal is perfect for
both live performances and studio recordings.
Warning
The Microtubes B7K has a current draw of 30mA. To ensure optimal
performance and protect your unit, it is essential to use a
regulated 9V DC adapter with a center-negative plug. Please note
that this pedal does not accept batteries due to ecological
reasons. Using unregulated power supplies or higher voltages may
result in suboptimal noise performance and can even damage your
unit, voiding the warranty.
Warranty
To activate the warranty, we strongly encourage you to register
your product on our website at http://mypedal.darkglass.com.
During registration, please enter the serial number located on the
back of your pedal. If you need to ship a product to us, kindly
contact our support team via email at support@darkglass.com.
Controls
-
Blend: This control allows you to mix the
clean input signal with the overdriven signal. The clean signal
remains at unity gain while the volume of the overdriven signal can
be adjusted using the Level knob, providing precise control over
the blend ratio. -
Level: Use this knob to set the volume of the
overdriven signal. -
Drive: Adjusts the amount of gain in the
overdriven signal, allowing you to dial in the desired amount of
distortion. -
Grunt Switch: This switch offers three
different bass boost levels before the clipping stage, enabling you
to saturate the low-frequency content according to your
preference. -
Attack Switch: The Attack switch determines
the amount of treble content to saturate. The Boost setting
emphasizes the treble content for extra clarity and presence, while
the Flat position leaves this register untouched. The Cut position
reduces the amount of high frequencies being saturated. -
Equalizer: The Microtubes B7K features a
versatile equalizer section with the following frequency bands: Low
(+-12dB @ 100Hz), Low Mids (+-12dB @ 1kHz), High Mids (+-12dB @
2.8kHz), and Treble (+-12dB @ 5kHz). Use these controls to shape
your tone precisely. -
Parallel Output: This output provides a
hardwired copy of your input signal, which is useful for recording
and live situations when you need a clean signal alongside the
overdriven sound.
Technical Specifications
-
Input Impedance: 500k
-
Output Impedance: 1k
-
Current Consumption: ~20mA
-
Voltage: 9V DC (Center Negative)
-
Dimensions: Width: 106 mm (4.21 in), Height:
120 mm (4.72 in), Depth: 45 mm (1.77 in) -
Weight: 350 g (0.78 lb)
Disclaimer
In the interest of continuous improvement, specifications are
subject to change without notice. If you have any questions or need
further assistance, please don’t hesitate to contact us at
www.darkglass.com.
EMC / EMI
This equipment has been tested and complies with the limits for
a Class B Digital device, as per part 15 of the FCC rules. These
limits are designed to provide reasonable protection against
harmful interference in residential installations.
Please note that this equipment generates, uses, and can radiate
radio frequency energy. If not installed and used in accordance
with the instructions, it may cause harmful interference to radio
communications. While there is no guarantee that interference will
not occur in a particular installation, you can try the following
measures to correct any potential interference:
-
Reorient or relocate the receiving antenna.
-
Increase the separation between the equipment and the
receiver. -
Connect the equipment to an outlet on a different circuit than
the one used by the receiver. -
Consult an experienced radio/TV technician for additional
suggestions.
FAQ
1. Can I use batteries to power the Microtubes B7K?
No, the Microtubes B7K does not accept batteries due to
ecological reasons. Please use a regulated 9V DC adapter with a
center-negative plug to power the pedal.
2. How do I activate the warranty for my Microtubes B7K?
To activate the warranty, register your product on our website
at http://mypedal.darkglass.com and
enter the serial number located on the back of your pedal.
3. What should I do if I need to ship a product for warranty or
support?
Please contact our support team via email at
support@darkglass.com before shipping a product to us. They will
provide you with further instructions.
USER MANUAL
Microtubes B7K
The Black Beast
Tone crushing overdrive and super transparent modern sound is the essence of
the B7K. One of the most acclaimed Darkglass pedals in the bass community, it
doesn´t compromise the original sound of the instrument, but it enhances it´s
presence in the mix.
Warning
The Microtubes B7K 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.
Warranty
To activate the warranty, we encourage you to register your product on:
http://mypedal.darkglass.com and enter the serial number on the back of your
pedal.
Please contact us via email support@darkglass.com before shipping a product to
us.
Controls
Blend: 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.
Level: Sets the volume of the overdriven signal.
Drive: Sets the amount of gain in the overdriven signal.
Grunt Switch: Sets the amount of low frequency content to saturate by
selecting between three different bass boost levels before the clipping stage.
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.
Low: +-12dB @ 100Hz | Low Mids: +-12dB @ 1kHz | Hi Mids: +-12dB @ 2.8kHz |
Treble: +-12dB @ 5kHz.
Parallel Output: Hardwired copy of your input signal, useful for getting a
clean signal in recording and live situations
Direct Output: A balanced version of the ¼” output, useful for running into
PA’s or studio mixing consoles.
Technical Specifications
Input Impedance Output Impedance Current Consumption Voltage
500k 1k ~20mA 9V DC (Center Negative)
Dimensions Width Height Depth
Weight
106 mm (4.21 in) 120 mm (4.72 in) 45 mm (1,77 in) 350 g (0.78 lb)
Disclaimer
In the interest of continuous improvement, specifications are subject to
change without notice. If you have any questions, please don’t hesitate to
contact us at www.darkglass.com
The manufacturer claims that the above product fulfills the requirements as
set by EN55013, EN55020, EN60555-2, EN60555-3, RoHS, WEEE.
EMC / EMI
This equipment has been tested and found to comply with the limits for a Class
B Digital device, pursuant to part 15 of the FCC rules. These limits are
designed to provide reasonable protection against harmful interference in
residential installations.
This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. There is no guarantee that interference
will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the
following measures:
· Reorient or relocate the receiving antenna. · Increase the separation
between the equipment and receiver. · Connect the equipment to an outlet on a
circuit different from that to which the receiver is connected. · Consult the
dealer or an experienced radio/TV technician for help.
DA R K G L A S S E L E C T R O N I C S OY. Helsinki, Finland
www.darkglass.com