Universal audio UA4110 User Manual
Model 4110/8110
Four and Eight Channel
Precision Microphone Preamplifiers
Universal Audio Manual Number 65-1001
Revision 1.00
The 4110 and 8110 Preamps
Thank you for choosing the Universal Audio Precision Microphone Preamplifier The X110 series is based
on the discrete class A analog technology from Universal Audio’s award winning 2192 converters.
Fidelity
The X110 series preamps offer totally transparent, crystal clear natural fidelity as well as flexible
control over the input impedance and transformer saturation resulting in increased flexibility making it
a great choice for a wide variety of applications. The X110 series offers a complimentary tool to be
used along side our 2-610 tube preamps and the classic overdrive character of our 2108 solid-state
preamps.
The X110 analog signal path uses DC-coupled, matched-FET, all discrete Class-A circuitry, resulting in
ultra-low noise, excellent transient response and unmatched sound. Capacitors are not used in the
signal path in order to avoid degradation in audio quality and phase distortion while increasing the
overall image stability. Our no-compromises design approach and extensive history in analog and
digital circuit design ensure your signals are totally accurate and have the highest possible fidelity.
“SHAPE” Control
The X110 handles multi-channel applications and excels among the best modern, ultra-clean units. In
addition, it also offers enough sonic variation to create the “character” UA mic preamps are so known
for,
effectively maximizing multi-channel functionality. Every channel of the X110 Preamp features
dedicated Gain and Level controls, dual input Impedance Selection, and a 3-way "SHAPE" switch
offering variable signal-paths for maximum sonic versatility. While the OFF position is perfect for a
modern preamp sound with no coloration, Position 1 (Vintage) borrows from vintage circuits and adds
transformer saturation, enhancing harmonic content. Position 2 (Saturate) maintains transformer
color and adds soft limiting, particularly useful on transient rich and dynamic sounds.
Features
• DC-coupled, matched-FET, all discrete Class-A, no-compromises analog signal path
• Ultra-low noise
• High Gain
• Pristine signal path uses no capacitors reducing phase distortion and avoiding degradation in
audio quality and image stability
• SHAPE Control offers flexible sonics, providing variations of harmonic color, subtle
compression and soft limiting
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• Dual impedance input transformer
• Separate Gain and Level controls for maximum signal to noise control and flexibility
• Multi-segment LED bar graph output metering on each channel
• Separate 3 stage input status LED on each channel
• Pad, Phase, Low Cut and +48 V all with separate backlit switches
• Line level inputs on every channel
• Rugged 3U rack mount chassis
In addition to the 4110 & 8110 Preamps, Universal Audio has released reproductions of the classic
Teletronix LA-2A Leveling Amplifier and 1176LN Limiter as well as the 610 tube preamp and 2108
microphone preamplifier, which are based on preamps used in legend Bill Putnam Sr.’s custom
consoles. Universal Audio also creates software emulations of our vintage hardware that run on our
UAD-1 DSP card as well as Digidesign’s Pro Tools platform. All of these products are designed to meet
the demands of the modern recording studio, yet retain the character and quality of vintage
equipment. See more at www.uaudio.com including the award winning 6176 channel strip, the new
LA610 all-tube channel strip, and 2192 Master Audio Interface A/D and D/A.
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IMPORTANT SAFETY INSTRUCTIONS
Before using this unit, be sure to carefully read the applicable items of these operating instructions and the safety
suggestions. Afterwards keep them handy for future reference. Take special care to follow the warnings indicated on the
unit, as well as in the operating instructions.
Water and Moisture – Do not use the unit near any
1.
source of water or in excessively moist environments.
2. Object and Liquid Entry – Care should be taken so that
objects do not fall, and liquids are not spilled, into the
enclosure through openings.
3. Ventilation – When installing the unit in a rack or any
other location, be sure there is adequate ventilation.
Improper ventilation will cause overheating, and can
damage the unit.
4. Heat – The unit should be situated away from heat
sources, or other equipment that produce heat.
5. Power Sources – The unit should be connected to a
power supply only of the type described in the operating
instructions, or as marked on the unit.
6. Power Cord Protection – AC power supply cords should
be routed so that they are not likely to be walked on or
pinched by items placed upon or against them. Pay
particular attention to cords at plugs, convenience
receptacles, and the point where they exit from the unit.
Never take hold of the plug or cord if your hand is wet.
Always grasp the plug body when connecting or
disconnecting it.
7. Grounding of the Plug – This unit is equipped with a 3-
wire grounding type plug, a plug having a third
(grounding) pin. This plug will only fit into a groundingtype power outlet. This is a safety feature. If you are
unable to insert the plug into the outlet, contact your
electrician to replace your obsolete outlet. Do not defeat
the purpose of the grounding-type plug.
8. Carts and Stands – The unit should be used only with a
cart or stand that is recommended by the manufacturer.
The unit and cart combination should be moved with
care. Quick stops, excessive force and uneven surfaces
may cause the unit and cart combination to overturn.
9. Wall Or Ceiling Mount – The unit should be mounted to a
wall or ceiling only as recommended by the
manufacturer.
10. Cleaning – The unit should be cleaned only as
recommended by the manufacturer.
11. Nonuse Periods – The AC power supply cord of the unit
should be unplugged from the AC outlet when left
unused for a long period of time.
12. Damage Requiring Service – The unit should be
serviced by a qualified service personnel when:
a) The AC power supply cord or the plug has been
damaged: or
b) Objects have fallen or liquid has been spilled into
the unit; or
c) The unit has been exposed to rain; or
d) The unit does not operate normally or exhibits a
marked change in performance; or
e) The unit has been dropped, or the enclosure
damaged.
13. Servicing – The user should not attempt to service the
unit beyond that described in the operating instructions.
All other servicing should be referred to qualified service
personnel.
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Notice
This manual provides general information, preparation for use, installation and operating instructions
for the Universal Audio 4110 and 8110 preamps.
The information contained in this manual is subject to change without notice. Universal Audio, Inc.
makes no warranties of any kind with regard to this manual, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose. Universal Audio, Inc. shall not be
liable for errors contained herein or direct, indirect, special, incidental, or consequential damages in
connection with the furnishing, performance, or use of this material.
Copyright
© 2005 Universal Audio, Inc. All rights reserved.
This manual and any associated software, artwork, product designs, and design concepts are subject
to copyright protection. No part of this document may be reproduced, in any form, without prior written
permission of Universal Audio, Inc.
Trademarks
LA-2A, 1176LN, 2-610, 2108, 6176, 2-1176, LA-610, 4110, 8110, 2192, UAD-1 and the Universal
Audio, Inc. logo are trademarks of Universal Audio, Inc. Other company and product names mentioned
herein are trademarks of their respective companies.
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Table Of Contents
Specifications..................................................................................................................... 1
Operating Instructions........................................................................................................ 3
Front Panel ............................................................................................................... 3
Rotary Controls ......................................................................................................... 4
Input Select ............................................................................................. 4
Gain......................................................................................................... 5
Level ........................................................................................................ 5
Function Switches.....................................................................................................6
Polarity .................................................................................................... 6
Low Cut.................................................................................................... 6
Mic Pad.................................................................................................... 6
+48 V (Phantom Power) .......................................................................... 6
Output Meter............................................................................................................. 6
Input Meter ............................................................................................................... 6
SHAPE Control Switch............................................................................................... 7
Power Switch ............................................................................................................ 7
Rear Panel .......................................................................................................................... 8
Input/Output............................................................................................................. 8
AC Power .................................................................................................................. 8
Fuse/Mains ............................................................................................................... 8
Voltage Select........................................................................................................... 9
Historical Notes ................................................................................................................ 10
The 610 Preamp...................................................................................................... 10
The 1176 and LA-2A Compressors.......................................................................... 11
The 1176................................................................................................................. 11
The LA-2A ............................................................................................................... 12
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