Arturia AudioFuse 8 Pre User manual

USER MANUAL

Special Thanks
DIRECTION
Frederic BRUN
Philippe CAVENEL
Nicolas DUBOIS
Kévin MOLCARD
Jean-Gabriel
SCHOENHENZ
ENGINEERING
Baptiste AUBRY
Marc ANTIGNY
Timothée BEHETY
Claire BOUVET
Simon CONAN
Corentin COMTE
Pierre DEMOUVEAUX
Thierry HAUSER
Jérome LAURENT
Pierre PFISTER
Léonard SAUGET
DESIGN
Martin DUTASTA Axel HARTMANN Morgan PERRIER
TESTING
Arnaud BARBIER Matthieu COUROUBLE Germain MARZIN
BETA TESTING
Marco CORREIA
Ben EGGEHORN
Boele GERKES
Jay JANSSEN
Randall LEE
Luca LEFEVRE
Terry MARSDEN
Ken Flux PIERCE
Chuck ZWICKY
MANUAL
Randall LEE (author)
Minoru KOIKE
Vincent LE HEN
Charlotte METAIS
Jose RENDON
Holger STEINBRINK
Jack VAN
© ARTURIA SA – 2019 – All rights reserved.
26 avenue Jean Kuntzmann
38330 Montbonnot-Saint-Martin
FRANCE
http://www.arturia.com
Information contained in this manual is subject to change without notice and does not
represent a commitment on the part of Arturia. The software described in this manual is
provided under the terms of a license agreement or non-disclosure agreement. The software
license agreement specifies the terms and conditions for its lawful use. No part of this
manual may be reproduced or transmitted in any form or by any purpose other than
purchaser’s personal use, without the express written permission of ARTURIA S.A.
All other products, logos or company names quoted in this manual are trademarks or
registered trademarks of their respective owners.
Product version: 1.0.0
Revision date: 19 July 2019

Thank you for purchasing AudioFuse 8Pre!
AudioFuse 8Pre is an invaluable addition to the Arturia audio interface family, with the
same superior sound quality that made the original AudioFuse a production powerhouse —
plus additional connectivity that allows the AudioFuse 8Pre to function on its own or as an
expansion to any existing setup.
For the technically-minded, there's a comprehensive description of our proprietary
DiscretePRO® technology here.
This manual covers the features and operation of the AudioFuse 8Pre. For additional
information about Arturia’s AudioFuse Control Center, the companion software for the
AudioFuse 8Pre, please read the owner's manual for that software.

Important Safety Instructions
PRECAUTIONS INCLUDE, BUT ARE NOT LIMITED TO, THE FOLLOWING:
1. Read and understand all the instructions.
2. Always follow the instructions on the device.
3. Before cleaning the device, always remove the USB and DC cable. When
cleaning, use a soft and dry cloth. Do not use gasoline, alcohol, acetone,
turpentine or any other organic solutions; do not use a liquid cleaner, spray or
cloth that's too wet.
4. Do not use the device near water or moisture, such as a bathtub, sink, swimming
pool or similar place.
5. Do not place the device in an unstable position where it might accidentally fall
over.
6. Do not place heavy objects on the device. Do not block openings or vents of the
device; these locations are used for air circulation to prevent the device from
overheating. Do not place the device near a heat vent at any location with poor
air circulation.
7. Do not open or insert anything into the device that may cause a fire or electrical
shock.
8. Do not spill any kind of liquid onto the device.
9. Always take the device to a qualified service center. You will invalidate your
warranty if you open and remove the cover, and improper assembly may cause
electrical shock or other malfunctions.
10. Do not use the device with thunder and lightning present; it may cause electrical
shock.
11. Do not expose the device to hot sunlight.
12. Do not use the device when there is a gas leak nearby.
13. Arturia is not responsible for any damage or data loss caused by improper
operation of the device.
Specifications subject to change:
The information contained in this manual is believed to be correct at the time of printing.
However, Arturia reserves the right to change or modify any of the specifications without
notice or obligation to update the hardware that has been purchased.
IMPORTANT:
The product and its software, when used in combination with an amplifier, headphones or
speakers, may be able to produce sound levels that could cause permanent hearing loss.
DO NOT operate for long periods of time at a high level or at a level that is uncomfortable. If
you encounter any hearing loss or ringing in the ears, you should consult an audiologist.
NOTICE:
Service charges incurred due to a lack of knowledge relating to how a function or feature
works (when the product is operating as designed) are not covered by the manufacturer’s
warranty, and are therefore the owner's responsibility. Please study this manual carefully
and consult your dealer before requesting service.

Introduction
Dear musician,
We’d like to thank you for purchasing AudioFuse 8Pre, one of the most versatile, affordable
pro audio interfaces on the market. The AudioFuse 8Pre can be configured for tabletop
operation or mounted in a rack, so whether you are just starting to build a music workspace
or want to expand using only the best equipment, there is a place for the AudioFuse 8Pre in
your creative process.
As with its older brother the AudioFuse, the AudioFuse 8Pre has been constructed using
components of the utmost quality so as to achieve recordings of the utmost quality. And we
made it a point to ensure maximum flexibility and transparency, no matter how you might
want to use it:
• Direct-access, "one button per function" design
• Pristine audio quality from the universally acclaimed DiscretePRO® Preamps
• Plug-and-play with macOS, one-time driver installation for Windows PCs
• USB type C connection: great latency, superb bandwidth, and backward
compatibility with USB 2.0 (Arturia driver required for Windows systems)
This manual will help you make the most of the AudioFuse 8Pre. It will also refer
occasionally to the AudioFuse Control Center (AFCC), the powerful companion software we
designed to work with the AudioFuse family of audio interfaces.
You can use the AFCC to adjust the front panel controls of the AudioFuse 8Pre if you like,
and you will also find parameters and routing options that are not available from the front
panel.
If you are reading this manual and have not already downloaded the AFCC, you can find it
on the Downloads & Manuals page of the Arturia support site. Select the "AudioFuse Control
Center" link on the left side of the page and download the appropriate version for your
computer.
Be sure to visit the www.arturia.com website for information about all of our other great
hardware and software instruments. They have proven time and again to be the go-to
solutions for musicians around the world.
Wishing you all the best in your musical endeavors,
The Arturia team

Table Of Contents
1. Welcome to AudioFuse 8Pre!................................................................................................................................ 3
2. Overview........................................................................................................................................................................... 5
2.1. The front panel........................................................................................................................................................................ 5
2.1.1. Channels 1 and 2............................................................................................................................................................................................................ 5
2.1.2. Channels 3 through 8 ................................................................................................................................................................................................ 7
2.1.3. Output controls .............................................................................................................................................................................................................. 8
2.1.4. Clock, Sync, Power, and Mode buttons ...................................................................................................................................................... 10
2.2. The rear panel ...................................................................................................................................................................... 12
2.2.1. ADAT, Word clock, USB, and power ............................................................................................................................................................... 12
2.2.2. Output connectors .................................................................................................................................................................................................... 15
2.2.3. Input channels 1 and 2 .......................................................................................................................................................................................... 15
2.2.4. Input connectors 3-8............................................................................................................................................................................................... 16
2.2.5. Virtual loopback channels 17 and 18.............................................................................................................................................................. 17
3. Registration .................................................................................................................................................................... 18
3.1. What's in the box?.............................................................................................................................................................. 18
3.1.1. DiscretePRO® certificate......................................................................................................................................................................................... 18
3.1.2. Register your AudioFuse 8Pre ........................................................................................................................................................................... 18
3.1.3. AudioFuse Creative Suite ...................................................................................................................................................................................... 19
3.1.4. AudioFuse Control Center..................................................................................................................................................................................... 19
4. Setting up the AudioFuse 8Pre........................................................................................................................ 20
4.1. Attaching the rack ears ................................................................................................................................................. 20
4.1.1. Rackmount configuration .................................................................................................................................................................................... 20
4.1.2. Tabletop configuration ............................................................................................................................................................................................ 21
4.2. Computer setup.................................................................................................................................................................. 22
4.2.1. macOS.............................................................................................................................................................................................................................. 22
4.2.2. Windows ........................................................................................................................................................................................................................ 22
5. The USB and ADAT modes.................................................................................................................................. 24
5.1. A quick contrast of each mode................................................................................................................................. 24
5.1.1. In ADAT Mode ............................................................................................................................................................................................................... 24
5.1.2. In USB Mode................................................................................................................................................................................................................. 24
5.2. How to switch modes..................................................................................................................................................... 25
5.3. Audio routing of each mode and clock rate.................................................................................................... 25
5.3.1. Channel routing in ADAT mode........................................................................................................................................................................ 25
5.3.2. Channel routing in USB mode ......................................................................................................................................................................... 26
5.4. Additional information ................................................................................................................................................... 27
5.4.1. With a computer ......................................................................................................................................................................................................... 27
5.4.2. Without a computer................................................................................................................................................................................................. 27
5.5. Chaining two AudioFuse 8Pre units...................................................................................................................... 27
5.5.1. Method 1: Direct USB connections ................................................................................................................................................................... 27
5.5.2. Method 2: One USB connection ...................................................................................................................................................................... 28
5.5.3. USB channel assignments ................................................................................................................................................................................. 28
6. Using the AudioFuse 8Pre ................................................................................................................................... 29
6.1. Connection overview........................................................................................................................................................ 29
6.2. About the USB and ADAT modes ............................................................................................................................ 29
6.3. Real-world examples ..................................................................................................................................................... 30
6.3.1. System 1: Record a band..................................................................................................................................................................................... 30
6.3.2. System 2: Expand an existing system ........................................................................................................................................................ 31
6.3.3. System 3: Record live drums ........................................................................................................................................................................... 32
6.3.4. System 4: 16 audio inputs, one USB cable............................................................................................................................................... 33
6.3.5. System 5: 16 audio inputs, 2 USB cables.................................................................................................................................................. 34
7. Synchronization......................................................................................................................................................... 35
7.1. Sync while in USB mode................................................................................................................................................ 35
7.1.1. As master (Sync = INT) ........................................................................................................................................................................................... 35
7.1.2. As slave ............................................................................................................................................................................................................................ 36
7.2. Sync while in ADAT mode ............................................................................................................................................ 36
7.2.1. As master clock (Sync = INT)............................................................................................................................................................................. 36
7.2.2. As slave device........................................................................................................................................................................................................... 36
7.3. Word Clock setup .............................................................................................................................................................. 37
7.3.1. Two devices.................................................................................................................................................................................................................... 37
7.3.2. Three devices ............................................................................................................................................................................................................... 37

7.3.3. Word Clock summary ........................................................................................................................................................................................... 38
8. Frequently asked questions ............................................................................................................................... 39
9. Specifications ............................................................................................................................................................. 40
9.1. System requirements ..................................................................................................................................................... 40
9.2. Audio specifications........................................................................................................................................................ 40
9.3. Synchronization options ............................................................................................................................................... 42
9.4. Signal Level LEDs............................................................................................................................................................... 42
10. Software License Agreement......................................................................................................................... 43
11. Declaration of Conformity.................................................................................................................................. 45

1. WELCOME TO AUDIOFUSE 8PRE!
Arturia has a long history of developing hardware and software products that are popular
throughout the music industry due to their innovative, powerful features, high quality, and
affordability.
Our first USB audio interface, the AudioFuse, was introduced in 2017. It boasts some of the
finest microphone preamps the world has ever seen: Arturia's DiscretePRO® Preamps, with
precision analog circuitry, high-quality AKM premium A/D converters, and +24dBu pro-audio
level compatibility. In a feat of engineering genius, all of these components were housed in
a compact design at a cost-to-benefit ratio that rivals devices with a much higher price tag.
That tradition continues with the AudioFuse 8Pre, the second in our family of professional-
grade USB audio interfaces. It offers not two, but eight DiscretePRO® Preamps in a single
rack space, along with 8 pristine analog outputs, 8 channels of ADAT audio inputs and
outputs, flexible clocking options, rock-solid synchronization, and a single-button-per-
function user interface that sacrifices nothing but complicated menus (there aren't any!).
Oh yeah, there's also our way-cool rackmount ear design that allows you to rotate the
ears 903, add rubber feet, and stand the AudioFuse 8Pre on a desktop at a very useful
and ergonomic position. Plus you can link two AudioFuse 8Pre units together and they can
present themselves to a computer as a single, 16-channel unit, rather than needing to be
recognized as two independent devices.
We've also expanded the feature set of the AudioFuse Control Center software to
complement the new capabilities of this awesome series of audio interfaces. Be sure to
download the AFCC from the Downloads & Manuals page of the Arturia support site.
We predict that you and your AudioFuse 8Pre will become inseparable friends in the very
near future.
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Features of AudioFuse 8Pre:
• 16 input channels / 20 output channels
• 8 microphone preamps with DiscretePRO® technology
• Independent 48V / phantom power capability for all mic preamps
• XLR combo jacks for all inputs
• Channels 1 & 2 have a Hi-Z setting for instrument-level inputs
• Independent balanced insert connections for channels 1 & 2
• Channels 1 & 2 offer auto-switching front panel access for instant connectivity
• LED metering for analog input channels
• Individual gain pot, phase invert, pad settings for analog input channels
• Built-in audio loopback feature, configurable via AudioFuse Control Center
• 8 independent line outputs on balanced TRS connectors
• Speaker outputs on balanced TRS connectors
• 1 stereo headphone output (6.35 and 3.5mm TRS), designed for headphones up
to 600 Ohms
• Selectable monitoring section with individual level control for speakers and
phones
• Direct monitoring via ultra-low latency internal mixer
• Double ADAT connectivity for 8 channels I/O at 96kHz
• Word clock input, output/thru on BNC
• DiscretePRO® Individual audio performance certificate delivered with each unit
• USB-C interface compatible with PC, macOS, & Linux, fully USB 2.0 compatible
• Robust metal chassis in a single-space rack form factor
• Rack ears can be mounted at 903angle for tabletop use
• Combines with other audio interfaces such as AudioFuse for even more
flexibility.
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2. OVERVIEW
2.1. The front panel
The AudioFuse 8Pre follows the design philosophy of the entire AudioFuse series: it's easy
to use. Almost everything the unit can do is right before your eyes; there are no additional
menus or alternate pages. Each button has a single function; if its label says what you want
the AudioFuse 8Pre to do, press it and it happens. It's that simple.
2.1.1. Channels 1 and 2
You know how it goes: you have everything wired just right in your studio and then someone
shows up with a new piece of gear that you just HAVE to check out right away. What do
you do: unplug something somewhere and leave its cables dangling? Wouldn't it be great
to have a quick, high-quality way to listen to that new microphone, guitar, or synth without
disrupting your work flow?
Yes, it would. That's why we put these two connectors on the front panel: they access the
same DiscretePRO® preamps, inserts, and controls as the connectors on the back, and even
have another front-panel button (INST) that gives you even more flexibility. Now you're
ready for anything the musical world can throw at you. Bring it on!
4: Channels 1 and 2 have auto-switching circuitry. That means that when you plug a cable into one
of the front connectors, AudioFuse 8Pre will switch the connection automatically from back to front.
Likewise, when the front cable is unplugged, the connection will switch automatically from front to back.
2.1.1.1. Channel 1 and 2 XLR combo inputs (front panel)
You can plug a microphone or an instrument into these combo connectors; they'll accept
either type of cable. Once the connection is made you can use the buttons and the gain
control knob to dial in the perfect input level.
If the rear connectors are being used for input channels 1 and 2 and you connect something
to one of the front panel connectors, the connection will switch automatically. The rear-panel
connection will be restored after the front panel cable is removed.
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2.1.1.2. Channel controls
Status LEDs
Channels 1 and 2 have three LEDs located at the top of the front panel, above the gain
controls. They let you know that a connection has been made, and which type (XLR or 1/
4"). You may need to press the INST button to make the distinction between standard line
impedance (medium impedance) and instrument impedance (high impedance).
Gain controls
Use this knob to fine-tune the input level to make sure you're getting the optimal range.
Ideally the incoming signal should peak between the -10 and -6dB LEDs. If you are seeing
the Clip LED light up then you should lower the input gain to prevent unwanted distortion.
Depending on the input device, you also may need to try a different Pad setting. We'll explain
the Clip LED and the PAD button a little later.
4: The channel gain knobs are analog controls that do not communicate their movements to the
computer, and so there is no equivalent control in the AudioFuse Control Center.
48V
Some microphones need what is often referred to as "phantom power". If that's the case,
engage the 48V button. You can tell phantom power is active when the button is lit.
PAD
There are two or three settings available using the Pad button, depending on what you have
plugged into the jack.
•MIC has three settings: PAD off (unlit), PAD on (lit white), and BOOST (lit red)
•LINE/INST has two settings: PAD off (unlit) and PAD on (lit white)
Each setting selects a different range in which the channel gain controls will operate. The
details are listed in Audio specifications [p.40].
Here's a chart that describes how to switch the settings using the PAD button.
Input Short press Long press
Mic Toggles between off (unlit) and on (lit white) Boost (lit red)
Line/Inst Toggles between off (unlit) and on (lit white) (not available)
4: If a cable is disconnected the AudioFuse 8Pre remembers the PAD setting for that channel and
will restore it the next time you plug in the same type of cable.
INST (Instrument)
This button is one of the differences between the first two input channels and the other six:
Channels 3-8 do not have an INST button.
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The INST button changes the impedance of the input channel to Hi-Z (high impedance). This
is designed to be used with instruments that have passive pickups, such as electric guitars
and basses, stringed instruments (mandolin, violin, etc.), and electric pianos (reed or tine-
based). So if you're connecting an instrument like one of those directly, activate the INST
button.
4: If you're already using a pre-amp for your instrument, such as the output of an effects unit, you
probably don't need to use the INST button.
Phase
This button inverts the phase of the incoming signal. This is very useful in certain situations,
such as when you are using two microphones to record the output of a guitar amplifier.
For example, let's say you want to record the sound of a microphone that is close to the
speaker and another microphone that is placed further away to capture the sound of the
room. If there is a certain frequency that is being overemphasized by the distance between
the microphones (i.e., there's a harmonic node), try using the Phase button. The inversion of
the signal of one the microphones might cancel out the problem frequencies. (If not, move
the room mic to a slightly different location.)
Level meters
The function of these LEDs is fairly obvious: they let you know if the signal level is too low,
too high, or just right. One important detail is that CLIP will light up when the signal level
reaches -1 dBFS. This means you should lower the input gain. Set your levels so that the
peaks of the incoming signal are between the -10 and -6dB LEDs most of the time. This will
help to prevent unwanted distortion.
2.1.2. Channels 3 through 8
Everything that was described for channels 1 and 2 [p.5] is also true for input channels 3
through 8, with the following exceptions:
• There are only two Input Source LEDs (Mic and Line).
• Channels 3-8 don't have an INST button.
• Connections for these channels are always made on the rear panel.
• Input channels 3-8 don't have insert jacks.
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2.1.3. Output controls
# Control name
1 Level control for the Speakers
2 Level control for the Headphones
3 Mono button
4 Monitor selection button
4: The knobs in the Output control section are analog controls, and they do not communicate their
movements to the computer. This is why the Master control fader does not change in the AudioFuse
Control Center when you turn the Speakers knob on the AudioFuse 8Pre. However, when you press the
Mono and Cue/Main 1-2 buttons their status does change in the AFCC.
2.1.3.1. Speaker output level
This knob controls the volume of the mix being sent to your monitor speakers. The output
source can be toggled between the Main Outputs and the Cue mix using the Cue / Main 1-2
button.
The Cue mix is an ultra-low latency monitoring mixer that can be defined using the
AudioFuse Control Center. By default all analog inputs are set to unity gain and panned to
center, and the Main 1-2 outputs are hard-panned left and right (i.e., stereo).
The advantage of being able to set up a different mix for the Cue send is that the person
in the recording booth can be listening to a different mix than what is playing back in the
control room. That way the producer/engineer can monitor the overall mix while the person
in the booth hears only the tracks that are needed for reference.
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2.1.3.2. Headphones output level
This knob provides independent level control for the headphones. Both headphone jacks
always share the same mix and level control. By default the headphone output will match
the output of the Speakers when the Cue / Main 1-2 button is toggled unless you specify
otherwise in the AFCC.
2.1.3.3. Mono button
It's a good idea to check your mix occasionally by pressing the Mono button; that will help
you identify problem areas such as too much bass, phase cancellation issues, etc.
It's also a good way to anticipate situations a listener might encounter. For example,
sometimes people listen to their music through a small mono speaker, so they will set the
output of their device to Mono temporarily. If you're relying too heavily on stereo effects for
your guitar, the effects (or the guitar) might completely disappear in Mono. We've made it
easy for you to prevent issues like that with the Mono button.
2.1.3.4. Monitoring source selector
The Cue / Main 1-2 button will toggle both the speakers and the headphones between those
two sources. What you will hear from the Main 1-2 source depends on which mode you've
selected for the AudioFuse 8Pre:
•USB Mode: The audio from USB outputs 1 and 2 (i.e., the stereo mix of your DAW,
etc.), or
•ADAT Mode: The audio from ADAT inputs 1 and 2.
The Cue mix can be any combination of incoming audio sources, as defined in the no-
latency monitoring mixer of the AudioFuse Control Center.
4: The headphones receive the same mix as the speakers unless you specify otherwise in the AFCC.
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2.1.4. Clock, Sync, Power, and Mode buttons
2.1.4.1. Clock selector button
The Clock button works differently depending on which mode you have selected for the
AudioFuse 8Pre: ADAT mode or USB mode [p.24].
ADAT mode
The clock rate can only be changed from the front panel when the AudioFuse 8Pre is in
ADAT mode, and when it is using its internal clock (i.e., Sync = INT). As the Clock button is
pressed, the clock rate LEDs will indicate which clock rate has been selected.
The AudioFuse 8Pre might wait 2 seconds between presses of the Clock button under certain
circumstances. For additional information see the Synchronization chapter [p.35].
If Sync is set to ADAT or WORD the clock rate must be changed from the external device.
The clock rate LEDs will indicate which clock rate is being received, and the LOCK LED will
confirm that the two devices are synchronized.
USB mode
When the AudioFuse 8Pre is the master clock (Internal clock) and also in USB mode:
1. if you're connected to a MacOS computer you must use the Audio Midi Setup
application to change the clock sample rate
2. if you're connected to a Windows PC you can either use the AFCC or your audio
application if it allows this setting.
It cannot be changed from the front panel.
When the AudioFuse 8Pre is slaved to an external device (i.e., Sync = ADAT or WORD) the
clock rate must be changed from the external device. The clock rate LEDs will indicate
which clock rate is being received, and the LOCK LED will confirm that the two devices are
synchronized.
However, when the 8Pre is in USB mode and you switch to Sync = ADAT or WORD there
will not be an immediate change if the internal and external clock rates do not match. For
additional information see the Synchronization chapter [p.35].
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2.1.4.2. Sync selector button
Use the Sync button to select which of the three sources you want to use as the clock source
for the 8Pre. If one of the external Sync sources is not connected, the Sync selector button
will skip over that choice.
•INT is the internal clock of the AudioFuse 8Pre
•WORD is a Word Clock signal received through the WCLOCK IN connector
•ADAT is the clock rate received through the ADAT In 1 connector
The LOCK LED will light to let you know when the AudioFuse 8Pre has locked on to an
external clock.
4: ADAT In 1 must be used as the ADAT clock source, not ADAT In 2.
For a chart that lists all of the various states of the Clock and Sync LEDs, see the
Synchronization chapter [p.35].
2.1.4.3. The Arturia button
In the upper right corner of the front panel is a button that displays the Arturia logo. We'll
call that the "Arturia button." This is the button that will power on / off the AudioFuse 8Pre.
Hold it for 5 seconds and the unit will shut down; press it briefly and the unit will power up.
This button serves a second purpose: if the AudioFuse 8Pre is connected to a computer, a
short press of the Arturia button will open or close the AudioFuse Control Center software on
your computer.
2.1.4.4. Mode selector button
The button in the lower right corner of the front panel switches between the two main
operational modes of the AudioFuse 8Pre: USB and ADAT. The front panel controls work the
same way no matter which mode you select; the difference is what happens to audio that
is passing through the AudioFuse 8Pre.
For a full description see the USB and ADAT modes chapter [p.24].
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2.2. The rear panel
This is where all the fancy hardware is located that gives the AudioFuse 8Pre its power. It's
sort of like looking under the hood of a fine car, or going backstage at Disneyland to see
what makes all of the magic happen out front.
We'll go through each section of the rear panel from left to right.
2.2.1. ADAT, Word clock, USB, and power
# Connector name
1 Power
2 ADAT inputs and outputs
3 USB Type-C
4 Word Clock input and output
2.2.1.1. Power connector
Plug in the power connector and tighten its threaded nut snugly into position.
!: Use only the power supply provided by Arturia (15V DC, 2A, positive to ground).
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2.2.1.2. ADAT inputs and outputs
This is where to connect the ADAT "light pipe" cables (also known as digital optical cables).
They have a Toslink connector on each end. Plug one end into the AudioFuse 8Pre and the
other end into an ADAT-equipped device (Out -> In, In -> Out). This can be another member
of the AudioFuse family such as an AudioFuse, a second AudioFuse 8Pre, or any other audio
device that uses the ADAT protocol to transmit digital audio.
But the coolest part is that no matter which clock rate you select (44.1kHz to 96kHz),
you'll always have 8 digital inputs and 8 digital outputs available with the AudioFuse 8Pre,
because we have two sets of Toslink connectors for input and output.
The clock rate determines whether you need to use both sets of ADAT i/o connections or
only one.
Clock rate ADAT connectors to use Data carried
44.1k or 48k ADAT In / Out 1 Tracks 1-8
88.2k or 96k ADAT In / Out 1 and ADAT In / Out 2 Tracks 1-4 (ADAT In / Out 1)
Tracks 5-8 (ADAT In / Out 2)
If the other ADAT-equipped device will be the master clock, be sure to connect its first ADAT
optical output to the ADAT In 1 connector of the AudioFuse 8Pre. Remember: Only ADAT In 1
can receive the ADAT clock source, not ADAT In 2.
4: It's important to connect each ADAT output to the corresponding input on the other device (1->1,
2->2). This will help avoid confusion as to which track is showing up on each device.
2.2.1.3. USB Type-C connector
The USB connector is only used to connect the AudioFuse 8Pre to the AFCC; it does not
supply power to the unit. You will need to connect the power supply that shipped with the
unit in order to use it.
Plug the AudioFuse 8Pre into your computer and it will be available immediately as an audio
input/output device, whether you're using Windows or macOS. But for a Windows computer
you'll need to install the Arturia USB audio drivers [p.22] in order to access all of the features
of the AudioFuse 8Pre.
Whether you're using a Mac or a PC you'll want to install the AFCC [p.19], because it provides
access to even more features than are available from the front panel.
4: The AudioFuse Control Center software is available for Mac and Windows computers.
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There are some important points to remember when using multiple USB audio devices with
the same computer:
• Whenever possible, connect the AudioFuse 8Pre directly to your computer.
• It's okay to use a USB hub to connect the AudioFuse 8Pre, but we do not
recommend using the USB hub of another audio device such as the AudioFuse.
This can lead to channel identification issues.
• Use the same master Word Clock source for all devices, if possible. The
AudioFuse 8Pre has rock-solid sync and can be the Word Clock master for your
system.
4: A pair of AudioFuse 8Pre interfaces can be connected to the same computer in two different ways,
depending on what you are trying to do. For details see Chaining two AudioFuse 8Pre units [p.27] in the
USB and ADAT modes chapter [p.24].
2.2.1.4. Word Clock input and output
AudioFuse 8Pre can be the Word Clock master source for your system, or it can be slaved
to another device that generates Word Clock. These are often used in studios to ensure
sample-accurate transmission of digital audio when multiple devices and systems are
involved.
The AudioFuse Control Center has an option that allows the AudioFuse 8Pre to engage its 75
Ohm / Hi-Z termination circuit as needed. The Synchronization chapter [p.37] will help you to
determine which of the two Impedance settings to use (75 Ohm or Hi-Z).
The AFCC also allows you to use the WCLOCK OUT of the AudioFuse 8Pre as a "Pass-Thru".
This hardwires the Word Clock input directly to the output so the AudioFuse 8Pre can pass
the signal instantly to another device. This is a very handy setting to have when you want to
clock multiple units in a larger system. It helps avoid the need for additional T-connectors.
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2.2.2. Output connectors
# Connector name
1 Stereo speaker outputs
2 Output channels 1-8
2.2.2.1. Stereo speaker outputs
Adjust these outputs directly with the large control knob on the front panel. They are
designed to send audio to your studio monitors, and can be switched between the Main 1-2
output and the Cue mix as defined by the front panel controls or the AFCC.
2.2.2.2. Output channels 1-8
These outputs can be freely assigned in USB mode using the AFCC. You can set them up as
additional stereo pairs, individual outputs for particular instruments such as a monosynth, or
use them as additional speakers with a DAW that has surround-sound mixdown capabilities.
2.2.3. Input channels 1 and 2
We're going to jump over channels 3-8, but we'll describe them in the next section [p.16].
Input channels 1 and 2 are shared with the front panel connectors. The connection will
switch automatically to the front panel when something is plugged in there. But as soon as
you disconnect the cable on the front panel, the connection to the rear panel will be restored.
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