SPEAKER OUTPUT
: Use this connector to connect the
amplifier to your cabinet. This Speakon combo jack
allows for either Speakon or ¼” speaker cable
operation. The outputs are connected in parallel.
WARNING: Do not use an instrument cable with this
jack. Using an instrument cable can damage your
amplifier.
MIN - LOAD
: Press this switch when using a 2
Ω
load.
You can use this control to lower the output if your 4
Ω
cabinet is not able handle more than 500W (you can
also get 350W with an 8
Ω
cabinet in this
configuration).
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. If you are experiencing ground noise in
your DI signal try changing the setting of this control.
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. Using this
connection you have a signal processed by the preamp
of the amp (gain, distortion, eq, master, etc.)
USB
: The USB connector allows you to use the
Darkglass Suite to load different cabinet impulses or
change different parameters on your amp (midi,
compressor, etc)
HEADPHONE OUTPUT
: Connect your Headphones and
enjoy the impulse based cabinet emulation.
HEADPHONE VOLUME
: This knob controls the volume
of the headphone output.
