Radial Engineering mPress Users Manual

mPress

Modular Press Box

True to the Music

TM

Radial Engineering Ltd.
1588 Kebet Way, Port Coquitlam BC V3C 5M5
tel: [phone] • fax: [phone]

www.radialeng.com

email: [e-mail] • web: www.radialeng.com

Speci cations and appearance are subject to change without notice.
Copyright © 2016 Radial Engineering Ltd.

OWNER’S MANUAL

www.radialeng.com

Radial mPress Owner’s Manual

Modular Press Box

Table of Contents

Overview..................................................................................................2

Features ..................................................................................................3-4

Making Connections ................................................................................5

Optimizing Performance ..........................................................................6

Adding Music Playback ...........................................................................7

Using the mPress .................................................................................... 8-9

Specications and Block Diagram ...........................................................10

Warranty .................................................................................................. Back Cover

INTRODUCTION

Thank you for choosing the Radial mPress. We believe it is one of the most forward thinking press
boxes made today and are condent that you will nd it to be both feature rich and intuitive.

As with any new product, it is important that you take a few minutes to read the manual. Inside, you will
nd details on how to get the most out of the mPress along with safety tips that can prevent damage
due to misuse. If afterwards, you nd yourself wondering about something or feel that details may be
missing, please visit the mPress FAQ page on the Radial website. This is where we post questions
from users and helpful updates. If you still nd yourself in need of answers, feel free to drop an email
to [e-mail] and we will do our very best to answer in short order.

Now get ready to broadcast that message with more authority than ever!

1

Specications and appearance are subject to change without notice.
Copyright © 2016 Radial Engineering Ltd.

www.radialeng.com

True to the Music

OVERVIEW

The Radial mPress is a modular press box and command center that can distribute audio to up to eight gallery
recorders on its own, or be combined with multiple Radial Exo-Pod™ modules to create a larger distribution network.
The mPress (active) and Exo-Pod (passive) can be connected in a star con guration where each output feeds a
single Exo-Pod, a series con guration where up to four Exo-Pods can be daisy-chained from a single mPress
gallery output, or any combination of the two.

Simple 8 Out

mPress mPress

Star Con guration Series Con guration

mPress

Exo-Pod Exo-PodExo-Pod Exo-Pod

The mPress features two microphone preampli ers with available 48V phantom power. XLR inputs are paralleled
on the front and rear of the unit for convenience. A limiter with adjustable threshold and release controls can be
engaged after the mic inputs to reduce the possibility of overloading recorder inputs. The rear XLR inputs can also
be set to line level to distribute the outputs of a mixing console or other line level source.

Program material inputs (3.5mm, RCA & ¼”) are provided with a dedicated level control for the outputs of a mixing
console or a music playback device. Left and right MAIN outputs allow for connection to an ampli er or powered
speakers and a headphone output allows for easy monitoring.

To feed the press gallery, you can use any or all of the mPress outputs as needed. Each gallery output may be set
to a low level for direct connection to a microphone input on a press recorder or PA system, or to a high level to drive
Exo-Pods. Each optional Exo-Pod is equipped with 10 XLR and four 3.5mm outputs. A trim control is provided on
the Exo-Pod to reduce the level from the mPress, making it suitable for connection for a variety of mic or line level
devices.

®

iPod

(Rear)

+4dB

Radial Engineering Ltd. mPress™ Owner’s Manual

Recorder

2

True to the Music

1-2 GALLERY OUTPUTS: First two

TEST: Activates a 1kHz

test tone to test outputs

and set recorder levels.

dual level outputs with high settings to

feed Exo-Pods or line level device, and

a low setting to feed mic level inputs.

¼” TRS

headphone output

with level control.

PHONES:

MAIN OUT LEVEL:

Adjusts the overall

output level going to

the PA system.

PROGRAM: Activates the program

RELEASE: Used to set

the speed at which the

limiter resets itself.

THRESHOLD: Sets

the input voltage level

where the limiter be-

gins to work.

LIMITER ON: Used to prevent

HPF: High pass  lter

eliminates excessive

resonance and proxim-

ity effect build-up.

inputs with adjustable level control

for the outputs of a mixing console

or music playback device.

loud signals from clipping and

distorting recorder inputs.

®

INPUT: 3.5mm and RCA

consumer line level input

for laptop, tablet or iPod

LEDs: Metering lets

you know signal is ac-

tive or overloading.

ON: Used to turn on

each MIC input.

MAIN OUT ON:

Activates the left

music playback.

GAIN: Control to

set the microphone

and right MAIN

outputs.

input level.

48V: Recessed switch acti-

vates 48V phantom power

MIC 1/2: XLR-F inputs used

to connect two microphones

to the mPress.

for condenser mics.

FRONT PANEL FEATURES

3

Radial Engineering Ltd. mPress™ Owner’s Manual

True to the Music

PROGRAM INPUTS: ¼” and RCA inputs are

for the output of a console or music playback

device. These are wired in parallel with the

front panel program inputs.

MIC/LINE INPUTS: When set to MIC,

these are wired in parallel with the front

panel XLR inputs. When set to LINE,

they bypass the mic preamps and di-

rectly feed the main and gallery outputs.

EXO-POD GALLERY OUTPUTS: Dual

level outputs with high setting to feed

Exo-Pods or line level devices, and low

setting to feed mic level inputs.

1/4” MAIN OUTS: Used

to feed a pair of powered

speakers to supply audio

to the audience.

MIC/LINE: Recessed switch

sets both rear XLR inputs to

mic level or line level operation.

LOW/HIGH: Recessed

switch sets the output level

for each gallery output.

GND LIFT: Ground lift

switch disconnects the

ground on pin-1 at the

XLR program outputs.

XLR MAIN OUTPUTS: Used to

feed a pair of powered speak-

ers or mixer to supply audio to

the audience.

REAR PANEL FEATURES

Radial Engineering Ltd. mPress™ Owner’s Manual

POWER: 100V to

240V input with secure

XLR connection for

the power supply.

4

MAKING CONNECTIONS

True to the Music

Before making connections, ensure all level controls are turned
down to zero (fully counter-clockwise), all switches are set in the out
position and PA system speakers turned off. This prevents power
turn-on transients from damaging more sensitive components such as
tweeters. Plug the mPress power supply in. There is no power switch.
Once connected, the mPress will spring to life. To verify power is being
received, depress the MIC-1 ON switch to illuminate the LED.

Push IN to activate the

48V phantom power for
condensor microphones.

Connect your  rst microphone to the MIC-1 input. You can use the
front panel XLR or the one on the rear panel. When the rear XLR
inputs are set for mic level (recessed MIC/LINE switch in the OUT
position) do not use the front and rear XLR inputs simultaneously; they
are wired in parallel for convenience. If phantom power is needed,
activate the 48V power switch using a small screwdriver. This switch
is recessed to avoid accidentally engaging or disengaging phantom
power. Connect a pair of headphones to the mPress and set the
headphone level control half-way (12 o’clock) to start. Slowly increase
the MIC-1 input level until you see the input meter LED illuminate. Test
the level for maximum input by speaking loudly until the RED LED
illuminates. Then, back down the level for extra headroom. Adjust the
headphone level as you go along to suit.

Locking XLR power supply included.

Test the microphone level with headphones

before sending the signal to the mains.

Headphone Safety Warning

Caution: Very Loud Ampli er

See back page for details

MIC-2 input can be used independently on a second source in a
conference or town-hall meeting arrangement. In this case, connect
using the same method as outlined above. When both mic inputs are
engaged, they are summed after the limiter section to a mono output
that will be present at each of the GALLERY OUTPUTS, the MAIN
OUTPUTS, and in the HEADPHONES.

Once your mic levels are set, engage the MAIN OUT ON switch to
activate the sends to the PA system and slowly raise the MAIN OUT
LEVEL control until the desired output is achieved.

Rear MIC/LINE XLR Inputs

The rear XLR inputs on the mPress can be con gured for MIC or LINE
level operation, allowing you to use them with microphones or the
outputs of a mixing console. When the recessed MIC/LINE switch is
set to the ‘OUT’ position, these inputs will be wired in parallel with the
front MIC-1 and MIC-2 inputs. When the MIC/LINE switch is set to ‘IN’
for line level, these inputs bypass the mic pre’s and directly feed the
GALLERY outputs and the MAIN outputs.

5

Radial Engineering Ltd.

mPress

rear view

Recessed switch press
IN for line level sources.

mPress™ Owner’s Manual

True to the Music

OPTIMIZING PERFORMANCE

There are two built-in functions that can help optimize the performance
of your microphones on stage: a high-pass lter and a limiter.

High-Pass Filter

A high-pass lter (HPF) is used to reduce low frequency content
coming from the microphone before it is amplied. The HPF performs
two very important functions. First, it gently rolls off the bottom end
to clean up the signal and reduce bass resonance. This not only
improves intelligibility, but also helps eliminate feedback. It can also
reduce transmission noise from the podium entering the mic.

Second; reducing the bottom end also helps reduce the microphone’s
proximity effect. The proximity effect is caused by the speaker being
too close to the microphone which, in turn, over-accentuates bass
frequencies in the voice. Rolling off the bottom end solves the problem!

High-Pass Filter Response

+5

+0

-5

-10

20 50 100 200 500

Hz

Limiter

When confronted with an over-zealous orator, a clear microphone
signal can quickly turn into distortion if not kept in check. But even the
most experienced audio engineer cannot always prevent loud peaks
from causing clipping and distortion. The mPress is equipped with
a limiter to address this occurrence. It is important that you practice
using the limiter on the mPress as the effect can be a bit tricky to set
up at rst.

There are two controls on the limiter. The rst is the THRESHOLD.
This sets the level at which the limiter starts to kick in and compress
the signal, preventing distortion when the speaker gets too loud. Start
with the THRESHOLD turned to its highest setting (fully clockwise), so
that only the loudest peaks are affected. Slowly turn the THRESHOLD
counter-clockwise until you hear it compress the signal. When this
is audible, you are likely applying too much compression. Turn the
THRESHOLD back up a couple of notches and then try yelling into the
mic to ensure it keeps the level from distorting.

Start with the THRESHOLD fully
clockwise and roll back until loud

peaks no longer distort the mic pre.

The RELEASE control is used to determine how quickly the limiter is
‘reset’ after being triggered. When set too FAST, it can cause audible

In most cases leaving the RELEASE

in the middle position will work best.

pumping effects and sound unnatural. When set too SLOW, it can
totally eliminate the dynamics, which is also undesirable. Start by
setting the RELEASE to the middle 12 o’clock position and test it
by listening as you rotate it one way, then the other. In most cases,
somewhere around halfway works best.

Radial Engineering Ltd. mPress™ Owner’s Manual

6

ADDING STEREO FEEDS FROM A MUSIC PLAYBACK DEVICE

The PROGRAM section of the mPress is equipped with a number of
unbalanced line level inputs for connecting and distributing additional
audio sources. You can use these inputs to connect a device for music
playback to feed background music through powered loudspeakers
while the audience waits.

On the front panel there are 3.5mm and RCA program inputs, while
the back panel has ¼” and RCA inputs. Only one set of inputs should
be used as these are all parallel connections. When the PROGRAM
ON switch is depressed, these inputs are activated and sent to the
GALLERY OUTPUTS, MAIN OUTPUTS and the HEADPHONES.
When using powered loudspeakers, ensure that your MAIN OUT
is turned on and set to an appropriate level before turning up the
PROGRAM LEVEL.

CONNECTING THE GALLERY OUTPUTS

The mPress is equipped with 8 dual level transformer-isolated XLR
outputs to distribute your signal to a number of recording devices
without any loss in sonic clarity. Each of these outputs is a mono sum
of the engaged MIC/LINE INPUTS 1 and 2, along with any active
PROGRAM inputs. The  rst two GALLERY OUTPUTS are on the front
of the mPress for convenience, while the remaining six can be found
on the rear panel. Recessed switches next to each output allow the
user to set the signal levels to HIGH or LOW, allowing a variety of line
or mic level devices to be connected.

iPod

True to the Music

®

When connecting a mic level device, push IN the recessed switch to
set to LOW output. When connecting a line level recorder or an Exo­Pod module, disengage the recessed switch for HIGH output.

TEST TONE

The mPress also features a 1kHz signal generator that sends a test
tone to each of the GALLERY OUTPUTS. This allows each recording
device to be simultaneously calibrated with the mPress for optimal
recording level. Push IN the TEST switch to activate the test tone.

Push IN to activate a 1kHz

test tone to test the input

level of the recorders.

If using a line level device,
disengage the recessed
switch to set for HIGH output.

If using a mic level device,
push IN the recessed switch
to set for LOW output.

7

Radial Engineering Ltd.

mPress™ Owner’s Manual

True to the Music

USING THE MPRESS

Basic 8 Out System

In this setup, you are using the mPress to feed up to eight recording
devices in a press gallery. Ensure that the recessed switches on the
GALLERY OUTPUTS are set correctly for each device (LOW for
mic level recorders, HIGH for line level devices). Once connected,
activate the 1kHz test tone so that each recorder can be calibrated to
the output of the mPress. Now test using the microphone to ensure
that the signal is clean.

Exo-Pod Modules

GND LIFT: Ground lift switch

disconnects the ground on
pin-1 at the XLR.

TRIM: Adjust the output
level if the signal is too hot.

Distributing more than two mic signals

When you have a panel of speakers, you can use the mPress to
distribute the outputs of a mixing console via the rear MIC/LINE inputs.
In this con guration, you can also connect backup microphones
through the mPress MIC INPUTS which will keep running even if the
mixing console goes down or loses power.

Backup mic into

the mPress.

mPress Front

LINE level

seclected

mPress Rear

+4dB

Exo-Pod Modules

The optional Exo-Pod modules allow you to greatly expand the
number of outputs of your system and they can be used to create
zones to prevent crowding around one location. Each Exo-Pod is
equipped with an XLR female input, an XLR male LOOP-THRU, ten
XLR outputs with ground lifts and four mini 3.5mm TRS outputs for
added convenience. Simply connect the Exo-Pod to the one of the
mPress GALLERY OUTPUTS (set to HIGH output) using a standard
XLR mic cable and you instantly have an additional 14 transformer
isolated outputs. A TRIM control at the input allows you to adjust the
signal level to suit either mic or line level devices. If connecting line
level recorders, begin with the TRIM turned fully clockwise (maximum
output level). For mic level recording devices, start with the TRIM at 12
o’clock and turn down as necessary.

To

additional

Exo-Pods

From

mPress

LOOP

6

THRU INPUT

mPress EXO POD

TRIM

10 CHANNEL PRESS BOX & EXPANDER

1

3

2 4

LIFTLIFT

LOOP

6

THRU INPUT

TRIM

1

LIFTLIFT LIFTLIFT LIFT

910 78

R

Made in Canada

5

LIFTLIFT LIFT

LIFTLIFT LIFTLIFT LIFT

910 78

R

mPress EXO POD

10 CHANNEL PRESS BOX & EXPANDER

2 4

Made in Canada

3

LIFTLIFT

LIFTLIFT LIFT

5

Line Level

Begin with the TRIM fully clockwise
(maximum output level) and reduce
if the level is too hot.

Mic Level

Begin with the TRIM at 12 o’clock
and reduce if the level is too hot.

D C

A

B

D C

A

B

Radial Engineering Ltd. mPress™ Owner’s Manual

8

Star Confi guration with Exo-Pods

In this setup, you are connecting each Exo-Pod to one of the mPress
gallery outputs using a standard XLR mic cable. This lets you feed up
to 14 press members using one Exo-Pod in one particular zone. Set
the level control on the Exo-Pod to fully clockwise (maximum output
level) and then reduce the level if it’s too hot. As many as eight zones
may be set up in this manner, creating what is commonly known as a
star network con guration.

True to the Music

When using the mPress with an Exo-Pod, the
GALLERY OUTPUT should be set to HIGH by
disengaging the recessed switch to the OUT
position.

LOOP

6

THRU INPUT

TRIM

1

mPress EXO POD

10 CHANNEL PRESS BOX & EXPANDER

2 4

3

LIFTLIFT

LOOP

6

THRU INPUT

TRIM

1

LIFTLIFT LIFTLIFT LIFT

910 78

D C

R

Made in Canada

A

B

5

LIFTLIFT LIFT

LIFTLIFT LIFTLIFT LIFT

910 78

R

mPress EXO POD

10 CHANNEL PRESS BOX & EXPANDER

2 4

3

LIFTLIFT

LOOP

6

THRU INPUT

TRIM

1

Made in Canada

LIFTLIFT LIFT

mPress EXO POD

10 CHANNEL PRESS BOX & EXPANDER

2 4

LIFTLIFT

D C

A

B

5

LIFTLIFT LIFTLIFT LIFT

910 78

3

R

Made in Canada

LIFTLIFT LIFT

D C

A

B

5

Series Confi guration with Exo-Pods

Here, you are now connecting one Exo-Pod into another with the
LOOP THRU output, creating a series con guration also known as
a daisy-chain. As detailed below, set the gallery outputs to HIGH and
then connect from the mPress gallery out to the  rst Exo-Pod. From
the Exo-Pod LOOP THRU connection, add a second Exo-Pod using a
mic cable. You can connect as many as four Exo-Pods in series from
each mPress gallery output. Any combination of the star and series
con gurations can be used.

LOOP

6

THRU INPUT

TRIM

1

mPress EXO POD

10 CHANNEL PRESS BOX & EXPANDER

2 4

LIFTLIFT

LIFTLIFT LIFTLIFT LIFT

910 78

R

Made in Canada

3

LIFTLIFT LIFT

D C

A

B

5

Set the level control on the Exo­Pod to fully clockwise (maximum

output level) and then reduce the

level if it’s too hot.

14 Outputs per Exo-Pod

4 Exo-Pods can be connected in
series per output channel

8 Output channels on the mPress

9

Radial Engineering Ltd.

LOOP

6

THRU INPUT

TRIM

1

LOOP

6

THRU INPUT

TRIM

1

LOOP

6

THRU INPUT

TRIM

1

LIFTLIFT LIFTLIFT LIFT

910 78

R

mPress EXO POD

10 CHANNEL PRESS BOX & EXPANDER

2 4

mPress EXO POD

10 CHANNEL PRESS BOX & EXPANDER

2 4

mPress EXO POD

10 CHANNEL PRESS BOX & EXPANDER

2 4

Made in Canada

3

LIFTLIFT

LIFTLIFT LIFT

LIFTLIFT LIFTLIFT LIFT

910 78

R

Made in Canada

3

LIFTLIFT

LIFTLIFT LIFT

LIFTLIFT LIFTLIFT LIFT

910 78

R

Made in Canada

3

LIFTLIFT

LIFTLIFT LIFT

= 448 Total outputs

D C

A

B

5

D C

A

B

5

D C

A

B

5

mPress™ Owner’s Manual

True to the Music

SPECIFICATIONS & BLOCK DIAGRAM*

Audio Circuit Type: ............................................................................... Low Noise Active Buffer

Frequency Response: ..........................................................................20Hz to >20KHz (+0/-1.5dB)

Total Harmonic Distortion: ....................................................................<0.001% @ +4dB

Dynamic Range: ...................................................................................>112dB

MICROPHONE

Input Impedance: ..................................................................................7k Ω

Maximum Gain: ....................................................................................+51dB

Noise Floor: .......................................................................................... -94dBu

Low-cut Filter: .......................................................................................100Hz (12dB/Octave)

Limiter Threshold: ................................................................................. -10dBu to +5dBu Output

Limiter Ratio: ........................................................................................>20:1

LINE INPUT

Maximum Gain .....................................................................................0dB

PROGRAM

Input Impedance: ..................................................................................22K Ω

Maximum Gain: ....................................................................................+19dB

MAIN OUTPUT

Equivalent Input Noise:.........................................................................-111dBu

Clip Level: .............................................................................................+24dBu / +17dBu

Output Impedance: ...............................................................................880 Ω

Intermodulation Distortion:....................................................................0.002%

GALLERY OUTPUT

Output Impedance: ...............................................................................115 Ohms

Noise Floor (Program in to main out): ..................................................-80 / -92dBu

Phase Deviation: ..................................................................................±15°

Microphone Signal Present LED Threshold: ........................................-70dBu / -54dBu / -42dBu

Phase Deviation: ..................................................................................±15°

GENERAL

Power: ..................................................................................................±15V / +5V Custom Power Supply

Construction: ........................................................................................14 Gauge Steel Chassis & Outer Shell

Finish: ...................................................................................................Durable Powder Coat

Size:......................................................................................................19” x 7.25” 1.75” (482.6mm x 184.15mm x 44.5mm)

Weight: .................................................................................................6.25lb

MIC 1 LEVEL

MIC 2 LEVEL

SIG PRESENT/

CLIP LED

MIC 1 ON

SWITCH

MIC 2 ON

SIG PRESENT/

CLIP LED

LOW

OUTPUT

3 IN/1 OUT

SWITCH

4 IN/1 OUT

MIX

4 IN/1 OUT

MIX

MIX

BALANCED

PHONES LEVEL

HEADPHONE

AMP

STEREO

OUTPUT

TEST TONE

GENERATOR

MAIN OUT

MAIN OUT

LEVEL

CONTROL

LEVEL

MAIN ON
SWITCH

BALANCED

LINE

DRIVER

PHONES

OUTPUT

BALANCED

LINE DRIVER

SWITCH

EXO-POD/GALLERY

OUTPUTS 1 - 2 ON FRONT

OUTPUTS 7 - 8 ON REAR

LOW
OUTPUT

SWITCH

GROUNDS ALWAYS LIFTED

EXO-POD/GALLERY

OUTPUTS 3 - 6 ON REAR

LOW
OUTPUT

SWITCH

LOW
OUTPUT

SWITCH

*Speci cations are subject to change without notice.

STEREO SOURCE

REAR PANEL

MIC 1
INPUT

REAR

MIC 2
INPUT

REAR

IN = LINE IN

OUT + MIC IN

GAIN

ACCUSTATE

MIC-PRE
WITH MIC

LEVEL

CONTROL

ACCUSTATE

MIC-PRE
WITH MIC

CONTROL

HIGH PASS

FILTER

GAIN

HIGH PASS

BALANCED TO

UNBALANCED

CONVERTER

BALANCED TO

UNBALANCED

CONVERTER

FILTER

STEREO SOURCE LEVEL

STEREO SOURCE

LEVEL

CONTROL

LEVEL

MIC 1
INPUT

FRONT

MIC 2
INPUT

FRONT

FRONT PANEL

1/8" PHONE

STEREO SOURCE

FRONT PANEL

1/4" PHONE

PHONO

LINE/MIC

BALANCED

INPUTS

INPUT

PHONO

INPUT

48V PHANTOM

POWER ON/OFF

48V PHANTOM

POWER ON/OFF

HPF1 ON

HPF2 ON

THRESHOLD

RELEASE

TIME

LIMITER

LIMITER

ON

SWITCH

LIMITER

STEREO SOURCE ON

SWITCH

IN = LINE IN

OUT + MIC IN

Radial Engineering Ltd. mPress™ Owner’s Manual

10

RADIAL ENGINEERING LTD.

3 YEAR TRANSFERABLE WARRANTY

RADIAL ENGINEERING LTD. (“Radial”) warrants this product to be free from defects in material and work­manship and will remedy any such defects free of charge according to the terms of this warranty. Radial will
repair or replace (at its option) any defective component(s) of this product (excluding nish and wear and
tear on components under normal use) for a period of three (3) years from the original date of purchase. In
the event that a particular product is no longer available, Radial reserves the right to replace the product
with a similar product of equal or greater value. To make a request or claim under this limited warranty, the
product must be returned prepaid in the original shipping container (or equivalent) to Radial or to an autho­rized Radial repair center and you must assume the risk of loss or damage. A copy of the original invoice
showing date of purchase and the dealer name must accompany any request for work to be performed
under this limited and transferable warranty. This limited warranty shall not apply if the product has been
damaged due to abuse, misuse, misapplication, accident or as a result of service or modication by any
other than an authorized Radial repair center.

THERE ARE NO EXPRESSED WARRANTIES OTHER THAN THOSE ON THE FACE HEREOF AND DE­SCRIBED ABOVE. NO WARRANTIES WHETHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
LIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE SHALL EXTEND BEYOND THE RESPECTIVE WARRANTY PERIOD DESCRIBED ABOVE
OF THREE YEARS. RADIAL SHALL NOT BE RESPONSIBLE OR LIABLE FOR ANY SPECIAL, INCIDEN­TAL OR CONSEQUENTIAL DAMAGES OR LOSS ARISING FROM THE USE OF THIS PRODUCT. THIS
WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS,
WHICH MAY VARY DEPENDING ON WHERE YOU LIVE AND WHERE THE PRODUCT WAS PUR­CHASED.

www.radialeng.com

CAUTION: The mPress is equipped with a high output headphone
amplier that is able to drive headphones with impedances that can
range from 8 Ohms to 400 Ohms. Prolonged exposure to high sound
pressure levels can cause tinnitus or even permanent hearing damage.
As the mPress is intended to be used by professionals, it is understood
that the user is responsible for proper use. Please consult your local
health authority guidelines to ensure you do not put yourself at risk.
Radial Engineering Ltd. shall not be held responsible for misuse.

To meet the requirements of California Proposition 65, it is our responsibility to inform you of the following:
WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects
or other reproductive harm.
Please take proper care when handling and consult local government regulations before discarding.

All trademarks belong to their respective owners. All references to these are for example only and are
not associated with Radial.

Radial Engineering Ltd.
1588 Kebet Way, Port Coquitlam BC V3C 5M5
tel: [phone] • fax: [phone]
email: [e-mail] • web: www.radialeng.com

Radial mPress™ Owner’s Manual - Part # R870 1011 00 / 10-2016
Specications and appearance are subject to change without notice.