Darkglass Electronics Microtubes B7K Ultra V2
Bass Preamp
Design and Tone. Perfected.
The upgraded Microtubes B7K Ultra with Aux in features: (1) Single user loadable cabinet simulation impulse response. (2) Micro-USB B port to connect to PC/Mac to load a different Virtual Cabinet through the Darkglass Suite. (3) 3.5mm headphone output with cabinet simulation. (4) Balanced XLR output with switchable cabinet simulation. (5) A 3.5mm stereo input that allows you to practice with backing tracks from e.g. your smartphone or laptop.
FEATURES
Master
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.
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 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.
Bass
+-12dB @ 100Hz
Lo Mids
+-12dB switchable 250Hz, 500Hz and 1kHz
Hi Mids
+-12dB switchable 750Hz, 1.5KHz and 3kHz
Treble
+-12dB @ 5kHz
Dimensions
Width: 125 mm / 5″
Length: 96 mm/ 3¾″
Height: 57 mm / 2¼″
Weight: 430 g / 0.95 lb
Darkglass Suite
Utilizing the desktop version of the Darkglass Suite allows you to load one of the available impulses responses of our library or add you custom / third party impulses to use with your pedal. In addition you can control the headphones level output.
INPUTS AND OUTPUTS
Input
Connect your instrument or output from your pedal board to the ¼” mono jack.
Aux In
This 3.5mm stereo input allows you to practice with backing tracks from e.g. your smartphone or laptop. Auxiliary input can only be used with the headphone output.
The pedal does not control the level, it must be set from your audio source. Remember to always first set the level low before connecting anything to the aux in!.
Headphone Output
B7K Ultra has an internal stereo headphone amplifier capable of driving a minimum load of 16 ohms from the 3.5mm stereo jack. Use the Master volume control to adjust the level.
9V DC
Only use a regulated 9V DC adapter with a center-negative plug
Output
Connect from the ¼” Output jack to the input of your amplifier or another effects pedal.
Direct Output
Balanced XLR output for connecting the pedal to a microphone preamp, PA system etc.
Ground lift
Disconnects the signal ground on the Direct Output to break any ground loops. Set this switch to either position that has less noise. The switch does not affect the ¼” output.
Warning
When the pedal is on bypass the master volume does not affect the headphone volume. In this case the total volume is adjustable in Darkglass Suite. With sensitive headphones, the bypass volume can be very loud if not adjusted.
The Microtubes B7K Ultra has a current draw of 120mA. Only use a regulated 9V DC adapter with a center-negative plug.
Unregulated power supplies and/or higher voltages may result in suboptimal noise performance and even damage your unit, voiding the warranty.
For more information, click here to visit the manufacturers website.
