Introduction
Owner’s Manual
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3
Stereo Tube Mic Pre, MP-2A
™
Welcome to the Analog Sound of the MP -2A. This is an all tube product, and there are some basics you should know before
using this product for the first time.
Tubes are a component that have specialized and unique features. If you are a “pre” or baby boomer, born before 1957,
you may recall using tubes in various products, such as radios, amplifiers, and televisions. So, this is just to refresh your
memory. If you are a “post” baby boomer, this could be your first experience with tubes, so please pay close attention!
(You will be tested at the end of this manual).
Tubes are most efficient and effective when “warmed up.” This means, upon starting the MP-2A, you should allow the
tubes to become fully heated before attempting to operate. The minimum amount of warm up time is approximately 15 to
20 minutes.
Set up your instrumentation layout before powering up the MP-2A. Plug in your instrument or microphone while the unit is
off. This will prevent unwanted noise such as “pops.” The same applies when you shut down. Allow a minimum of 25
seconds for the power to drain from the tubes properly. Then you can unplug your instrument or microphone. Always turn
your Phantom switch to the off position before plugging or un-plugging your Microphone.
When placing the MP-2A Series in a rack, we recommend using the first tier or allow one x space in order to properly
ventilate. Avoid overheating! Too much heat will reduce the life-span of your tubes. We also recommend strongly that
you observe SPL and shock mount any tube product.
A Designs Audio, Inc. has scoured the earth for the perfect combination of tubes for this unique quality sound. Go ahead,
get started. Read the following pages carefully to become acquainted with the warmth and clarity that the MP-2A can
deliver to your recordings.
Please feel free to email A Designs Audio, Inc. via the website with any creative applications for the use of the MP-2A. We
included some applications in this manual. We may just include your suggestion on our website!
Congratulations on the purchase of your MP-2A all tube microphone preamplifier! Most of all, have fun!
Peter Montessi, President
A Designs Audio, Inc.
