Introduction
The Darkglass MicroTubes 500 V2 Bass Head is a powerful and versatile amplifier designed for bass players seeking exceptional tone and performance. This manual provides comprehensive instructions for setting up, operating, maintaining, and troubleshooting your amplifier to ensure optimal use and longevity.
It features 500 watts of all-analog power, a versatile 6-band graphic EQ, a VCA compressor, and three IR cabinet simulation presets, making it a complete tool for modern bass players.
Safety Information
Please read and understand all safety instructions before operating the MicroTubes 500 V2. Retain this manual for future reference.
- Power Supply: Use only the specified power cord and connect to a grounded outlet. Ensure the voltage matches the amplifier's requirements.
- Ventilation: Do not block ventilation openings. Ensure adequate airflow around the unit to prevent overheating.
- Moisture: Do not expose the unit to rain, moisture, or excessive humidity. Keep liquids away from the amplifier.
- Servicing: Do not attempt to service the unit yourself. Refer all servicing to qualified service personnel.
- Speaker Connections: Always connect the amplifier to a speaker cabinet with the correct impedance before powering on. Incorrect impedance can damage the amplifier.
- Hearing Protection: Prolonged exposure to high volume levels can cause permanent hearing damage. Use caution when setting volume levels.
Key Features
- Delivers 500 watts of all-analog power for dynamic and punchy bass tones.
- Features a versatile 6-band graphic EQ for precise tonal shaping and customization.
- Includes a VCA compressor for studio-quality dynamic control and sustain.
- Equipped with three IR cabinet simulation presets for lifelike direct performance.
- True bypass circuitry maintains signal integrity when the amp is disengaged.
- Offers dual speaker outputs with 1/4-inch and speakON connectivity options.
- Send/return loop for easy integration of pedals and external effects processors.
- Passive/Active input mode selector to optimize performance for different bass pickups.
- Rear-panel XLR DI output for direct recording and connection to PA systems.
- Compact and lightweight design for easy transport and gigging convenience.
Controls and Connections
Front Panel Controls
Image: Front view of the Darkglass MicroTubes 500 V2 Bass Head, showing all knobs, buttons, and the graphic equalizer.
- Input: Standard 1/4" instrument input.
- Passive/Active Switch: Selects between passive and active input modes to accommodate different bass pickup outputs.
- Comp (Compressor): Controls the amount of compression applied to the signal.
- Microtubes Engine Switch: Engages the Microtubes distortion circuit.
- VMT (Vintage Microtubes) Switch: Selects the Vintage Microtubes mode for a warmer, more organic overdrive.
- B3K (B3K Microtubes) Switch: Selects the B3K Microtubes mode for a more aggressive, modern distortion.
- Drive: Adjusts the amount of gain for the Microtubes Engine.
- Tone: Controls the character of the Microtubes Engine distortion.
- Blend: Mixes the clean signal with the Microtubes Engine signal.
- Level: Controls the overall output level of the Microtubes Engine.
- Graphic EQ: Six sliders for precise frequency shaping at 250 Hz, 500 Hz, 1.5 kHz, 3 kHz, and 5 kHz.
- Master: Controls the overall output volume of the amplifier.
Rear Panel Connections
Image: Rear view of the Darkglass MicroTubes 500 V2 Bass Head, displaying all input and output jacks, including speaker outputs, effects loop, USB, and DI output.
- Speaker Output (Min. 2Ω): Dual outputs for connecting to speaker cabinets, supporting both speakON and 1/4" connections.
- Send/Return: Effects loop for integrating external effects pedals and processors.
- Footswitch: Input for an optional footswitch to control Microtubes Engine engagement.
- Aux In: 1/8" stereo input for connecting external audio devices (e.g., MP3 player) for practice.
- Headphones: 1/8" stereo output for silent practice.
- USB: USB-C port for connecting to a computer for firmware updates and Darkglass Suite software access (for IR loading and settings).
- Cab Select: Switch to cycle through the three onboard Impulse Response (IR) cabinet simulations.
- Pre/Post Switch: Determines whether the DI output signal is taken before (Pre) or after (Post) the amplifier's tone shaping and effects.
- GND Lift: Ground lift switch to eliminate hum or ground loop noise.
- DI Output: Balanced XLR output for direct connection to a mixing console or audio interface.
- Power Input: Standard IEC power connector.
- Power Switch: Turns the amplifier on or off.
Setup
- Power Connection: Connect the supplied power cord to the amplifier's power input and then to a grounded AC outlet.
- Speaker Connection: Connect your bass speaker cabinet(s) to the "Speaker Output" jacks on the rear panel. Ensure the total impedance of your cabinets is 2 ohms or higher. Use high-quality speaker cables.
- Instrument Connection: Plug your bass guitar into the "Input" jack on the front panel. Select "Passive" or "Active" based on your bass's pickups.
- Optional Connections:
- For effects pedals, connect them to the "Send" and "Return" jacks.
- For direct recording or PA system connection, use the "DI Output" XLR jack. Adjust the "Pre/Post" switch as needed.
- For silent practice, connect headphones to the "Headphones" jack.
- To play along with music, connect an audio device to the "Aux In" jack.
- To manage IRs or update firmware, connect a USB-C cable to the "USB" port and your computer.
- Power On: Ensure all connections are secure, then flip the "Power Switch" on the rear panel to the ON position.
Operating Instructions
Basic Operation
- Start with the "Master" volume knob at a low setting.
- Adjust the "Comp" knob to control the amount of compression. Higher settings provide more sustain and a more even dynamic response.
- Use the "Graphic EQ" sliders to shape your tone. Experiment with different frequencies to find your desired sound.
- Gradually increase the "Master" volume to your desired listening level.
Using the Microtubes Engine
The Microtubes Engine provides two distinct distortion modes:
- VMT (Vintage Microtubes): Engages a warm, organic overdrive reminiscent of classic tube amplifiers. Ideal for vintage rock and blues tones.
- B3K (B3K Microtubes): Engages a more aggressive, modern distortion with enhanced clarity and punch. Suitable for heavier genres.
To activate the Microtubes Engine, press the "Microtubes Engine" switch. Select your desired character using the "VMT" or "B3K" switches. Use the "Drive" knob to control the amount of distortion, "Tone" to adjust its character, and "Blend" to mix the distorted signal with your clean signal. The "Level" knob controls the output volume of the Microtubes Engine.
Cabinet Simulation (IRs)
The MicroTubes 500 V2 includes three onboard Impulse Response (IR) cabinet simulations. These can be accessed via the "DI Output" and "Headphones" output. Use the "Cab Select" switch on the rear panel to cycle through the available IRs. Additional IRs can be loaded and managed using the Darkglass Suite software via the USB connection.
Image: Screenshot of the Darkglass Suite software interface, showing options for selecting and managing cabinet impulse responses.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the amplifier's exterior. Do not use abrasive cleaners or solvents.
- Storage: Store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
- Transportation: When transporting the unit, ensure it is securely packed to prevent physical damage.
- Ventilation: Regularly check that the ventilation grilles are free from dust and debris.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output. |
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| Distorted or weak sound. |
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| Humming or buzzing noise. |
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Specifications
| Attribute | Value |
|---|---|
| Model Number | M500V2 |
| Output Wattage | 500 Watts |
| Item Weight | 7.37 pounds |
| Product Dimensions | 12.1 x 11.65 x 4.05 inches |
| Material Type | Metal |
| Color | Black |
| Power Source | Corded Electric |
| Compatible Devices | Bass Guitar |
| Connector Type | XLR, 1/4", speakON, USB-C |
Warranty and Support
Darkglass Electronics products are covered by a limited warranty. For detailed warranty information, product registration, and technical support, please visit the official Darkglass Electronics website or contact their customer service department.
Official Darkglass Electronics Website: www.darkglass.com
