Owner’s Manual
3
Owner’s Manual
Contents
Part No. SW1225 Rev. A 01/18
©2018 LOUD Audio, LLC All Rights Reserved.
Introduction
With the bus-powered MDB-USB Stereo DI, the days of
relying on your headphone jack to get audio from a computer
into analog gear are over.
Combining a high-resolution audio interface with a noise
and distortion-free stereo DI, MDB-USB converts your digital
audio into clean, balanced, stereo output.
Featuring an output level control, headphone output, and
mono sum for maximum versatility. Analog outputs are dual
XLR with ground lif.
Getting Started
The following steps will help you set up the MDB-USB Stereo
Direct Box quickly.
1. Turn down all level knobs on all connected gear.
2. Connect cords from the XLR outputs of the MDB-USB to
the inputs of a mixer, powered speakers or studio monitors.
3. Push the USB cable securely into the MDB-USB’s USB
input connector and plug the other end into any open USB
slot of the computer.
4. Turn the computer on. Make sure the MDB-USB powers
up, as well, indicated by the power LED.
5. Turn the mixer, powered speakers or studio monitors on.
6. Be sure that the volume of the input is the same as it
would be during normal use.
7. Slowly raise the level knob to a comfortable listening level.
Things to Remember
• Never listen to loud music for prolonged periods.
Please see the Safety Instructions on page 2 for
information on hearing protection.
• Save the shipping boxes and packing materials!
You may need them someday. Besides, your hamster
will love playing in them and jumping out at you
unexpectedly. Remember to pretend like you
are surprised!
• Save your sales receipt in a safe place.
Features
• Connect your computer directly via USB
• High-resolution 24-bit / 96 kHz interface
• Balanced, low-impedance XLR outputs with Ground Lif
• Output level control with Mono switch
• Headphone output for easy monitoring
• Noise-free operation
• Powered by computer
• Plug-and-play operation, no driver required
• Built-Like-A-Tank™ construction
How to Use This Manual
Afer this introduction, a getting started guide will help you
get things set up fast. The hookup diagram shows a typical
setup.
This icon marks information that is critically
important or unique to the MDB-USB.
For your own good, read and remember them.
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Important Safety Instructions ........................................2
Contents ........................................................................... 3
Features ............................................................................3
How To Use This Manual .................................................3
Introduction .....................................................................3
Getting Started ................................................................ 3
Things To Remember .......................................................3
Hookup Diagram .............................................................. 4
MDB-USB: Front Panel Features .................................... 5
1. USB Input ...............................................................5
2. Power LED ............................................................. 5
3. Level Knob .............................................................5
4. Headphone Output ...............................................5
5. Mono On / O Switch ...........................................5
6. Mono On / O LED ................................................5
MDB-USB: Rear Panel Features ..................................... 6
7. XLR Output Jacks ................................................. 6
8. Ground Lif Switch ...............................................6
Appendix A: Service Information ....................................7
Appendix B: Technical Information ................................8
MDB-USB Dimensions .............................................8
MDB-USB Block Diagram ........................................9
Limited Warranty ........................................................... 10
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