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U.40 4-Channel Line Mixer
U.420 4-Channel Line Mixer
Introduction
Thank you for choosing a Mackie U.420 mixer. It
contains all your favorite features in a ultra-compact
4-channel line mixer, along with a built-in FireWire
interface, and a phono input for turntablists.
The U.420 is equally at home in recording studio ap-
plications or in live performances:
In the studio, the mixer offers Mackie-quality sound
to sub-mix outboard gear and bring it into the computer.
It has 4 stereo inputs that can accept any stereo device
from synths, samplers, or a turntable. Channel 1 accepts
an instrument connection without the need for a DI box.
In live performances, the mixer will enable you to
sub-mix synths, computers, samplers, pedal boards,
turntables, cd-players, and effects on stage. Bands
and solo artists from DJs, electronic artists and singer
songwriters can use the mixer to sub-mix their creative
tools and deliver them to the sound board. The mixer’s
aux bus allows you to set up a separate mix to feed stage
monitors or external processors.
You will find that the U.420 mixer is a very useful
piece of equipment, and we hope you will love it, just as
much as we did making it for you.
FEATURES
• 4 stereo line-level input channels.
• Built-in FireWire 2x2 interface provides easy
input from computer to the main mix, and easy
outputs to the computer from the main mix. It
has 24-bit resolution, and 44.1, 48, 88.2, and 96
kHz sample rates.
• Separate FireWire modes for live performance
or overdubbing.
• Ultra-compact design, with functional and
ergonomic controls.
• 3-Band EQ on each channel, with kill position.
• Phono preamplifier on channel 4 accepts
phono-level stereo signals from a turntable.
• Instrument-level input option on channel 1.
• Stereo aux bus allows a separate mix to be sent
to stage monitors or external processors.
• TRS stereo main outputs.
• TRS stereo headphone output.
• TRS stereo aux bus outputs.
• Level-set LEDs and gain controls allow easy
optimization of each channel.
• Stereo main meters with overload lights.
• Large, easy to use, main level control.
• External power supply.
• Includes Tracktion, our
professional, easy-to-
use, totally-amazing music production software.
HOW TO USE THIS MANUAL
Please read the safety instructions on page 2 first.
The getting started guide on page 5 will help you get the
mixer set up fast so you can start using it right away.
Right after that are the ever popular hook-up diagrams
that show you some typical setups.
The features section describes every knob, button,
and connection point on the mixer, roughly following
the signal flow through the mixer from top to bottom.
For more information about a feature, locate its number
in the appropriate illustration, and find it in the nearby
paragraphs.
This icon marks information that is critically
important or unique to the mixer. For your
own good, read them and remember them.
This icon leads you to in-depth explanations
of features and practical tips. They usually
have some valuable nuggets of information.
Appendix A shows service and repair information.
Appendix B is a section on connectors.
Appendix C shows the specs and a block diagram.
Appendix D shows details of the FireWire interface.
Please write your serial number here for future
reference (i.e., insurance claims, tech support,
return authorization, etc.)
Purchased at:
Date of purchase: