Darkglass electronics Microtubes 900 User Manual

DESCRIPTION

The Microtubes 900™ is a 900W amplifier equipped
with an all analog preamplifie
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
is the foundation of your tone.

It features Gain
band EQ. Along with Low and Treble controls you
will find Low Mids
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.

and Master controls an active 4

and Hi Mids control, each knob

r and a Class D Power

which

.

The Microtubes Engine™ can be engaged via the
front panel or our own digitally controlled
Intelligent Footswitch™ (jack on rear panel). Besides
engaging the Microtubes circuitry you can hold the
actuator to Mute

We equipped the power module with some unique
control over the power output and minimum speaker
loads:

The standard mode will deliver 900W RMS at 4
Ω /500W at 8Ω . If you select the 2Ω Mode via the
rear panel switch
2Ω /500W at 4Ω and 350W at 8Ω .

This feature allows for maximum power adaptability.
It doesn’t matter the cabinet configuration or power
requirements, the Microtubes 900 will deliver
accordingly.

the amplifier.

the amplifier will deliver 900W at

FEATURES

FRONT PANEL

INPUT : Connect your instrument via a standard ¼”
mono cable.

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 described below).

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.

: Mixes between the Clean signal and the

BLEND
Distortion signal (Microtubes Engine).

B3K/VMT
B3K mode will deliver an aggressive, percussive
sound while the VMT will bring up the mids for a
warmer, more neutral character.

: Selects between two overdrive voicings: