Electronics / Audio
User Manual for Darkglass MICROTUBES X7 Bass Preamp Pedal
Quick guide for the Darkglass MICROTUBES X7 bass preamp pedal. Learn about control functions, power requirements, technical specifications, and how to register your device for warranty.
Table of contents
Quick guide from the manual
The Darkglass MICROTUBES X7 is a professional bass preamp pedal designed to provide a wide spectrum of distortion textures. Important: This unit does not accept batteries. You must use a regulated 9V DC adapter with a center-negative plug. Using unregulated power supplies or higher voltages may damage the unit and void the warranty.
Controls
The pedal features a comprehensive set of controls to shape your bass tone:
- High Pass Frequency: Controls the cutoff frequency for the distorted signal, ranging from 100Hz (thicker, fuzzier saturation) to 1kHz (ultra-sharp definition).
- High Drive: Sets the amount of distortion for the high-pass side.
- High Level: Sets the output volume of the distorted high-pass signal.
- Low Pass Frequency: Controls the cutoff frequency to be mixed back to the high-pass side, ranging from 50Hz (sub-bass) to 500Hz (preserving clean mids).
- Low Comp: Sets the amount of compression for the low-pass signal.
- Low Level: Sets the output volume of the low-pass signal.
- Master: Sets the overall volume of the unit.
The pedal also includes a 4-band equalizer:
- Low shelf: +-12dB @ 80 Hz
- 500 Hz: +-12dB
- 1 kHz: +-12dB
- High shelf: +-12dB @ 5 kHz
Technical Specifications
The following specifications apply to the MICROTUBES X7:
- Input Impedance: 1MΩ
- Output Impedance: 1kΩ
- Current Consumption: 70mA
- Voltage: 9V DC (Center Negative)
- Dimensions: 94 mm (Width) x 120 mm (Height) x 46 mm (Depth)
- Weight: 320 g
Warranty and Support
To activate your warranty, register your product at http://mypedal.darkglass.com and enter the serial number found on the back of your pedal. If you need to ship the product for service, please contact [email protected] via email first.
Compliance
This equipment has been tested and complies with the limits for a Class B Digital device, pursuant to part 15 of the FCC rules. It is designed to provide reasonable protection against harmful interference in residential installations.
Official resources from the manual
Practical help
Common problems
Unit will not power on
Ensure you are using a regulated 9V DC power supply with a center-negative plug. The unit does not support battery power.
Excessive noise or poor performance
Verify that you are using a regulated power supply. Unregulated power supplies or incorrect voltages can cause noise and potential damage to the unit.
Before use
- Verify power supply is 9V DC, center-negative.
- Ensure power supply is regulated.
- Register your pedal at http://mypedal.darkglass.com.
- Locate the serial number on the back of the pedal for registration.
Specs in practice
- Input Impedance (1MΩ)
- Standard high impedance for instrument inputs to ensure signal clarity.
- Current Consumption (70mA)
- The minimum current your power supply must provide to operate the pedal correctly.
- High Pass Frequency
- Determines the frequency range that gets distorted; lower settings result in fuzzier saturation, higher settings result in sharper definition.
- Low Pass Frequency
- Determines the frequency range of the clean/compressed signal mixed back into the output.
Images and diagrams
- The top row of knobs controls compression and levels for high and low frequency bands.
- The center sliders control the 4-band EQ (Low shelf, 500Hz, 1kHz, High shelf).
- The two smaller knobs control the High Pass and Low Pass frequency cutoffs.
Model compatibility
- Does not accept batteries.
- Requires regulated 9V DC power supply.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.