Darkglass Microtubes X 900 Bass Amplifier Head

Dial in thunderous bass tone with uncompromising precision! Darkglass' Microtubes X 900 bass amplifier boasts a 900-watt class D amplifier and a 6-band EQ.

The Darkglass Microtubes X 900 Bass Amplifier Head has uncompromising precision and the utmost control. Meticulously crafted with the target of achieving exceptional power with unprecedented precision, with no concessions or shortcuts. Designed after the revered X series pedals, this amplifier sets a new standard for accuracy and control.


- Input: Use this jack to connect your instrument via a standard 1/4" mono cable.
- Passive/Active: Use this push-button switch to change from passive to active mode. If your bass is active it can have a hotter signal, making the amp distort earlier (feel free to use if such additional distortion is desired).
- X: Use this push-button to turn on or off the Microtubes X Engine which allows you to compress and distort your bass signal in two separate bands, solidifying the clean low end and distorting the highs to taste from articulate to aggressive. The Microtubes X Engine operates before the EQ section.
- Clean Comp: Use this push-button switch to activate the compressor circuit for the clean channel.
- Vol (Clean Comp): Sets the level of the clean channel when the compressor is engaged.
- HPF (High Pass Filter): Controls the cutoff frequency of the high pass filter which is applied before the clean signal is fed to the distortion circuit. Ranging from 100 Hz (for thicker, fuzzier saturation) to 1 kHz (for ultra-sharp definition).
- Drive: Sets the amount of distortion for the high pass side.
- Mix: Controls the blend between the read more compressed lows and the distorted highs.
- LPF (Low Pass Filter): Controls the cut-off frequency of the low pass filter which is applied before the clean signal is fed to the compression circuit. Ranging from 50 Hz (for only sub-bass) to 500 Hz (to preserve some clean mids).
- Comp: Controls the amount of compression for the low band when X is activated. Both threshold and makeup gain are controlled to maintain a constant level. This control is also used to control the amount of compression when the compressor is enabled for the clean signal. The clean comp is full-range.
- Level: Sets the output volume of the X channel.
- Bass: +-12 dB @ 80 Hz.
- Mids: +-12 dB at 250, 500, 1.5k and 3 kHz.
- Treble: +-12 dB @ 3 kHz.
- Master: Sets the overall volume of the unit.
- Mute: Use this push-button to mute the amplifier.


- Packed with a Class D 900-watt amplifier and an ultra-quiet 6-band graphic equalizer that can sculpt the tone from aggressive and overdriven to crystal clear clean to suit everyone's needs.
- The X distortion circuit allows users to select exactly what frequencies they want to compress and saturate for the low and treble, respectively.
- Featuring MIDI for channel switching, and muting programmability, impulse response cabinet simulation, with up to three different storable virtual cabinets.
- Auxiliary input, and headphone output, offering unmatched versatility and control. A true companion on musical touring.
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.
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Input Impedance: 1.1 MΩ
Minimum Load Impedance: 2.5 Ω
Maximum Power Output: 900 W RMS @ 4 Ω (1 kHz full blast, 2 min. max) 20% THD, 450 W RMS @ 8 Ω
Power Amp Input (Return) Impedance: 100 kΩ
Power Amp Input (Return) Level: 2 Vrms (max before 1% THD)
Pre-Amp Output (Send) Impedance: 1 kΩ
Pre-Amp Output (Send) Level (max): 2.2 Vrms (max before 1% THD)
Maximum Power Consumption: approx. 700 VA
Cooling: Forced-air cooled
AC Input Power: 100-250 VAC
AC Frequency: 50/60 Hz

Width: 26.7 cm / 10.5"
Length: 25.5 cm/ 10"
Height: 7 cm / 2.75"
Weight: 2.9 kg / 6.39 lb
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 8.59 lbs
Shipping Dimensions: 15 x 12 x 4 in
Manufacturer Part Number (MPN): X900
Scratch and Dent
Shipping Weight: 8.59 lbs
Shipping Dimensions: 15 x 12 x 4 in
Manufacturer Part Number (MPN): X900

For support or warranty questions, please contact the manufacturer:
Phone: 631-390-6800
Email: support@darkglass.com
Web: https://www.darkglass.com/


  • 18 x
  • 12 x
    $108.33 with zZounds
  • 8 x
    $162.50 with zZounds
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