Front panel features:

• Input: 6,3 mm jack.
• Passive/Active: Use this push-button switch to change from passive to active mode.
• Microtubes: Use this push button to turn on or off the Microtubes Engine to add natural compression, organic harmonic enhancement, and saturation ranging from mild overdrive to high gain bass rage.
• Compression: This knob controls the amount of dynamic compression added to the Microtubes Engine.
• Drive: This knob controls the amount of distortion that the Microtubes Engine will deliver.
• Tone: This knob controls the high harmonic content of the Microtubes Engine via a variable low pass filter.
• Level: Use this knob to control Microtubes Engine’s output volume.
• Blend: Use this knob to mix between the Clean signal and the Distortion signal (Microtubes Engine).
• B3K/VMT: This push-button switch 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.
• Gain: Use this knob to change the volume of the signal before the Active 4 Band EQ.
• Bass:  -12 dB at 80 Hz.
• Mids:  -12 dB at 250, 500, 1.5 K and 3 Khz.
• Treble: -12 dB at 5 kHz.
• Master.
• Mute.

Back panel features:

• Speaker output: speakon, 6,3 mm jack.
• Min-Load switch.
• Pre amp out: You can use this output to connect the preamp to a different power amp.
• Power amp in: You can use this input to connect a different preamp in the power amp. (master volume will be disabled).
• Ground Lift: Use this control to lift the ground of the DI XLR output.
• Pre DI output: Use this connector to send a balanced copy of your clean signal to the console, mic preamp, interface, etc.
• Post DI Output: Use this connector to connect the Microtubes 900 preamplifier to balanced equipment (mic preamp, console, recorder, compressor, audio interface, etc.) via a standard XLR jack.
• USB.
• Headphone output: 6,3 mm jack.
• Headphone volume.
• Aux In.
• Cabinet select.
• MIDI.
• Footswitch: 6,3 mm jack.

Dimensions: 26,7 x 7 x 25,5 cm.

Weight: 2,9 kg.

Colour: Gray