1. Introduction
The Darkglass Microtubes X Ultra is a versatile bass preamp pedal designed to provide powerful distorted bass tones with clarity and control. It features advanced signal splitting, variable filters, a 6-band graphic equalizer, and a balanced XLR DI output, making it a comprehensive tool for modern bass players in various settings.
2. Key Features
- Delivers powerful distorted bass tones with punch and clarity.
- Splits your signal into two paths with variable lowpass and highpass filters for customized tone shaping.
- Includes a mix control to balance clean and distorted signals for optimal sound.
- Active mid control with ±12dB boost at 500Hz for extensive sound-shaping potential.
- Drive control adjusts the amount of distortion applied to the high-pass filtered signal.
- True bypass circuitry maintains signal integrity when the pedal is disengaged.
- Compact and lightweight design for easy integration into pedalboards.
- Powered by a standard 9V DC adapter for convenience and compatibility.
- Equipped with durable build quality for reliable performance on stage and in the studio.
- Rear-panel XLR DI output for direct recording and connection to PA systems.
3. Controls and Connections
3.1 Front Panel Controls
The front panel features various controls for shaping your tone and engaging distortion.
Image: Front view of the Microtubes X Ultra pedal.
- LOW COMP: Controls the amount of compression applied to the low-frequency signal path.
- LOW LEVEL: Adjusts the output volume of the low-frequency signal path.
- HIGH LEVEL: Adjusts the output volume of the high-frequency signal path.
- HIGH DRIVE: Controls the amount of distortion applied to the high-frequency signal path.
- Low Pass Filter (LPF): Selects the cutoff frequency for the low-frequency signal path (50Hz to 500Hz).
- High Pass Filter (HPF): Selects the cutoff frequency for the high-frequency signal path (100Hz to 1kHz).
- Graphic EQ Faders: Six faders provide ±12dB boost/cut at 250Hz, 500Hz, 1.5kHz, and 3kHz.
- MASTER: Overall output volume control.
- DISTORTION Footswitch: Engages or disengages the distortion circuit.
- BYPASS Footswitch: Engages or disengages the pedal (true bypass).
3.2 Rear Panel Connections
The rear panel provides essential input and output connections.
Image: Rear view of the Microtubes X Ultra pedal.
- INPUT: 1/4-inch instrument input.
- AUX IN: 1/8-inch stereo input for connecting external audio devices (e.g., music player).
- 9VDC: Power input for a standard 9V DC power supply (center negative).
- HEADPHONES: 1/8-inch stereo headphone output.
- OUTPUT: 1/4-inch instrument output.
- XLR DI OUTPUT: Balanced XLR output for direct connection to a mixing console or audio interface.
3.3 Side Panel Connection
The side panel features a USB port for advanced functionality.
Image: Side view of the Microtubes X Ultra pedal, showing the USB port.
- USB: Micro-USB port for connecting to a computer for firmware updates and software control (e.g., Darkglass Suite).
4. Setup
4.1 Powering the Unit
Connect a standard 9V DC power supply (center negative) to the 9VDC input jack on the rear panel. The pedal requires a stable power source for optimal performance.
4.2 Connecting to your Instrument and Amplifier
- Connect your bass guitar to the INPUT jack using a standard 1/4-inch instrument cable.
- Connect the OUTPUT jack to your amplifier's input using another 1/4-inch instrument cable.
- For direct recording or PA system connection, use an XLR cable to connect the XLR DI OUTPUT to your mixer or audio interface.
4.3 Using the USB Port
The USB port allows connection to a computer for firmware updates and access to the Darkglass Suite software. This software provides additional control over pedal parameters and features.
Image: USB cable for connecting the pedal to a computer.
5. Operating Instructions
5.1 Understanding the Signal Path
The Microtubes X Ultra splits your bass signal into two distinct paths: a low-frequency path and a high-frequency path. The low-frequency path remains clean and can be compressed, while the high-frequency path is processed with distortion. The Low Pass Filter (LPF) and High Pass Filter (HPF) controls determine the frequency range for each path. The LOW LEVEL and HIGH LEVEL controls adjust the volume of these respective paths, allowing you to blend them to achieve your desired tone.
5.2 Using the Graphic Equalizer
The 6-band graphic equalizer allows for precise tonal sculpting. Each fader provides ±12dB of boost or cut at its designated frequency (250Hz, 500Hz, 1.5kHz, 3kHz). Adjust these faders to fine-tune your overall sound or to compensate for room acoustics.
5.3 DI Output Functionality
The balanced XLR DI output provides a clean, low-impedance signal suitable for direct connection to mixing consoles, audio interfaces, or PA systems. This is ideal for live performance and studio recording, ensuring a consistent and high-quality signal.
5.4 Headphone Output and AUX In
The headphone output allows for silent practice. Connect your headphones to the 1/8-inch jack. The AUX IN allows you to connect an external audio source, such as a smartphone or MP3 player, to play along with backing tracks through your headphones.
6. Care and Maintenance
To ensure the longevity and optimal performance of your Microtubes X Ultra pedal, follow these guidelines:
- Cleaning: Use a soft, dry cloth to clean the pedal's exterior. Avoid abrasive cleaners or solvents.
- Power Supply: Always use a regulated 9V DC, center-negative power supply. Using an incorrect power supply can damage the unit and void the warranty.
- Environment: Protect the pedal from extreme temperatures, humidity, and direct sunlight. Avoid dropping the unit or exposing it to excessive force.
7. Troubleshooting
If you encounter issues with your Microtubes X Ultra, consider the following common troubleshooting steps:
- No Sound:
- Ensure all cables (instrument, amplifier, power) are securely connected.
- Verify the power supply is correctly connected and functioning.
- Check that the amplifier and instrument volumes are turned up.
- Ensure the pedal is not in bypass mode if you expect an effect.
- Unwanted Noise/Hum:
- Use a high-quality, isolated power supply.
- Check for faulty cables.
- Ensure proper grounding in your setup.
- Distortion Issues:
- Adjust the HIGH DRIVE control.
- Check the High Pass Filter (HPF) setting to ensure the desired frequencies are being distorted.
If problems persist, consult the Darkglass website for further support or contact their customer service.
8. Technical Specifications
| Feature | Specification |
|---|---|
| Model | MXU |
| Item Weight | 14.1 ounces (0.4 Kilograms) |
| Power Source | 9V DC (center negative) |
| Hardware Interface | USB |
| Signal Format | Analog |
| Color | Gray |
9. Warranty and Support
Darkglass Electronics products are manufactured to high standards and come with a limited warranty. For detailed warranty information, product registration, and technical support, please visit the official Darkglass website or contact their customer service department.
Official Website: www.darkglass.com
Image: Bottom view of the Microtubes X Ultra pedal, indicating manufacturing origin and website.
