Darkglass Microtubes 900

$ 994.62 incl. VAT

Microtubes 900

The Microtubes 900™ is a 900W amplifier equipped with an all analog preamplifier and a Class D Power Module. The first thing you will notice from the Microtubes 900 is its unusual control layout: On the right side you’ll find the clean section which is the foundation of your tone. It features Gain and Master controls an active 4 band EQ. Along with Low and Treble controls you will find Low Mids and Hi Mids control, each knob with their own 3-way frequency switch. On the left side you will find the Microtubes® Engine which acts as an extra channel that can bring your clean tone to the next level by helping you cut through the mix while adding anything from subtle tube break up, harmonics and natural compression to obliterating distortion.

Specs

Power and Ohm

Maximum Power Output
900 Watts RMS @ 4Ω (1Khz full blast 2 min max) 20%THD (450 Watts RMS @ 8Ω)
Minimum Load Impedance
4Ω (2Ω in 2Ω mode)

Controls

Gain
Changes the volume of the signal the Active 4 Band EQ. You can set it low prior to ensuring the cleanest operation possible or set it higher for more aggressive growl.
Drive
Controls the amount of distortion that the Microtubes Engine will deliver. It will change from a soft warm overdrive to a massive modern distorted tone.
Tone
Controls the high harmonic content of the Microtubes Engine via a variable low pass filter: crank it up for additional attack and definition or dim it down for a smoother sound. This is handy if running bright clean EQ settings or cabinets with tweeters.
Level
Controls the Microtubes Engine’s output volume.
Master
Controls the overall volume of the amplifier.

Eq

Bass
+-12dB at 80Hz. Changes the low content of the signal.
Low Mids
+-12dB of the selected frequency via the LOW MIDS ƒ switch (described below). Changes the lower mid content of the signal.
Hi Mids
+-12dB of the selected frequency via the HI MIDS ƒ switch (described below). Changes the higher mid content of the signal.
Treble
+-12dB at 5kHz. Changes the high content of the signal.

Toggle switches

Passive/Active
Switch from passive to active mode. Some active basses can have a hotter signal output which can make the amp distort early (feel free to use it on Passive move even with active basses if such additional distortion is desired).
Microtubes
Turns on or off the Microtubes Engine to add natural compression, organic harmonic enhancement, and saturation ranging from mild overdrive to high gain bass rage. The Microtubes Engine operates before the clean section (you can therefore use the 4 Band Active EQ for additional tone shaping in addition to the Tone knob
B3K/VMT
Selects between two overdrive voicings: B3K mode will deliver an aggressive, percussive sound while the VMT will bring up the mids for a warmer, more neutral character.
Low Mids ƒ
Use this switch to change the frequency of the low mid band from 250Hz, 500Hz or 1kHZ.
Hi Mids ƒ
Use this switch to change the frequency of the hi mid band from 750Hz, 1.5kHz and 3kHZ.
Mute
Mutes the amplifier.
Min-Load
Press when using a 2Ω load. You can use this control to lower the output if your 4Ω cabinet is not able to handle more than 500W (you can also get 350W with an 8Ω cabinet in this configuration).
Post-Pre
Selects what signal will be delivered by the DI output. Selecting PRE, sends a clean copy of your input bass signal. Selecting POST delivers a signal processed by the preamp of the amp (gain, distortion, eq, master, etc.)
Ground Lift
Lifts the ground of the DI XLR output. If a ground noise in you DI signal is experienced, try changing the setting of this control.

Outputs

Speaker out
Connects the amplifier to your cabinet. This Speakon combo jack allows for either Speakon or ¼” speaker cable operation. *WARNING: Do not use an instrument cable with this jack. Using an instrument cable can damage your amplifier.
Pre Amp Out
This output connects the preamp to a different power amp.
Balanced Output
Connects the Microtubes 900™ preamplifier to balanced equipment (mic preamp, console, recorder, compressor, audio interface, etc.) via a standard XLR jack.

Mechanics

Dimension
26.7cm l x 7cm h 25.5 w (10.5”l x 2.75”h x 10”w)
Weight
2.9Kg (6.39Lbs)

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