Black Box MM-1 User Manual
rev. 3.0
MM-1
Microphone preamplifier & D.I.
Rev. 1.0
REDEFINING WHAT A PREAMP CAN DO
(AGAIN)
The Black Box Analog Design MM-1 vacuum tube preamp is an entirely new
approach to capturing audio. It’s not based on any existing circuit but designed
from the ground up, using the best parts and ignoring all of the standard ideas
of how a preamp “should work”. We took the concept behind our original
microphone preamp, incorporated everything we discovered while building
the HG-2, made it even more exible, added features and even made it more
aordable! The result is an incredibly versatile piece of gear that not only
sounds amazing but shatters the idea of what a preamp can do!
Until now, a preamp simply amplied the signal; you essentially got one sound
and the ability turn it up or down. The MM-1 on the other hand allows you to
drastically shape the response curve of the unit without using an EQ, control
the harmonic content from pristine to full on saturation and even control the
dynamics without a compressor!
All of the shaping is done at the tubes and from the constantly variable
interaction between stages allowing you to dial in virtually unlimited tonal
possibilities. You can nd the sweet spot of any microphone and instrument
easily and naturally.
Congratulations on your new preamp!
Robert & Eric
1
IMPORTANT SAFETY INFORMATION
READ ALL INSTRUCTIONS BEFORE USE
WARNING!
For your safety, the information in this manual
must be followed to minimize the risk of electric
shock. Failure to do so may result in property
damage, injury or loss of life.
IMPORTANT SAFETY INSTRUCTIONS
WARNING:
This device contains high voltage electricity
capable of delivering lethal shocks if used improperly.
Never, under any circumstances operate this unit without being
connected to a properly grounded circuit! If you are unsure,
consult an electrician to make sure your outlet is properly
grounded before plugging the unit in.
Do not attempt to service unit or open the case for any reason.
Internal capacitors are capable of delivering dangerous shocks
even after the unit has been unplugged.
• Never defeat ground using a ground lift or other device.
• Never expose unit to moisture or water
• Never connect a microphone to the unit if hands are wet/damp
• Do not plug in or operate unit if it is visibly damaged.
• Never replace fuse with a fuse of a dierent rating.
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