Focusrite 18i8 User Manual

User Guide

www.focusrite.com

FFFA001411-01

2

TABLE OF CONTENTS

OVERVIEW..................................................................... 3

Introduction .................................................................3

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Box Contents ................................................................4

System requirements .........................................................4

Mac OS X ......................................................................4

Windows ......................................................................4

GETTING STARTED .............................................................5

Software Installation ..........................................................5

HARDWARE FEATURES.......................................................... 6

Front Panel..................................................................6

Rear Panel ..................................................................8

Connecting your Scarlett 18i8 ..................................................9

Power ........................................................................9

USB ..........................................................................9

Mac OS X only ..................................................................9

Windows only ..................................................................9

Audio Setup in your DAW .....................................................10

Example of Usage ...........................................................12

Connecting microphones and instruments .........................................12

Low Latency Monitoring ........................................................13

Connecting Scarlett 18i8 to loudspeakers ..........................................15

Using the ADAT connection ......................................................16

Using the Scarlett 18i8 as a stand-alone mixer......................................17

FOCUSRITE CONTROL ..........................................................18

SPECIFICATIONS .............................................................. 20

Performance Specifications ...................................................20

Physical and Electrical Characteristics ..........................................22

TROUBLESHOOTING ........................................................... 23

COPYRIGHT AND LEGAL NOTICES ...............................................23

3

OVERVIEW

Introduction

Thank you for purchasing this Second Generation Scarlett 18i8, one of the family of Focusrite
professional audio interfaces incorporating high quality Focusrite analogue pre-amplifiers. In
conjunction with the unit’s accompanying software application, Focusrite Control, you now have a
compact yet highly versatile solution for routing high quality audio to and from your computer. You
can also use the Scarlett 18i8 as a “stand-alone” interface to any other type of recording device, once
you have configured it using Focusrite Control.

Focusrite Control, and several other exciting and useful software applications, can be downloaded
free of charge once you have registered your product. Note that a separate Focusrite Control User
Guide is also available; we strongly recommend that you download this as well.

In developing the Second Generation series of Scarlett interfaces, we have enhanced both the
performance and feature set including support for sample rates up to 192 kHz, improved mic preamp
performance with low noise and plenty of gain, and upgraded instrument inputs with additional
headroom for recording the loudest guitar parts without clipping.

Your Second Generation Scarlett interface is compatible with the new Focusrite Control software
application: this lets you control various hardware features, set up monitor mixes and configure
routings. There is a Focusrite Control installer for both Mac and Windows platforms, and no driver
is required for Macs. The Windows version of the installer contains the driver, so in either case, you
only need to install Focusrite Control to get up and running.

This User Guide provides a detailed explanation of the hardware to help you achieve a thorough
understanding of the product’s operational features. We recommend that you take the time to read
through the user guide, whether you’re new to computer-based recording or a more experienced
user, so that you are fully aware of all the possibilities that the Scarlett 18i8 and accompanying
software have to offer. If the main User Guide sections do not provide the information you need,
be sure to consult https://support.focusrite.com/, which contains a comprehensive collection of
answers to common technical support queries.

Features

The Scarlett 18i8 audio interface provides the means for connecting microphones, musical
instruments, line level audio signals and digital audio signals in both ADAT and S/PDIF formats to
a computer running compatible versions of Mac OS X or Windows via one of the computer’s USB
ports. The signals at the physical inputs can be routed to your audio recording software / digital audio
workstation (referred to throughout this user guide as the “DAW”) at up to 24-bit, 192 kHz resolution;
similarly, the DAW’s monitor or recorded output signals can be configured to appear at the unit’s
physical outputs.

The outputs can be connected to amplifiers and speakers, powered monitors, headphones, an audio
mixer or any other analogue or digital audio equipment that you wish to use. Although all inputs and
outputs on the Scarlett 18i8 are routed directly to and from your DAW for recording and playback, you
can configure the routing within your DAW in order to meet your precise needs.

The accompanying software application, Focusrite Control, provides further routing and monitoring
options, as well as the ability to control global hardware settings such as sample rate and
synchronisation.

4

All inputs on the Scarlett 18i8 are routed directly to your DAW software for recording, but Focusrite
Control also allows you to route these signals internally within the device to the outputs so that you
can monitor the audio signals with ultra-low latency - before they arrive at your DAW, should you
need to do so.

The Scarlett 18i8 also has connectors for sending and receiving MIDI data; this lets you use it as a
MIDI “hub” between your computer’s USB port and other items of MIDI equipment in your system.

Box Contents

Along with your Scarlett 18i8 you should find:

• Bundle code* for accessing the following on-line resources:

- Focusrite Control (also available from www.focusrite.com/downloads)

- Focusrite Red 2 & 3 Plug-in Suite

- Softube Time and Tone bundle

- ProTools | First

- Ableton Live Lite

- LoopMasters sample library

- Novation Bass station

- Multi-language User Guides for both Scarlett 18i8 and Focusrite Control

• USB cable

• Getting Started Guide and Important Safety Information*

* information printed on the inside of the gift box

System requirements

Mac OS X

Apple Macintosh with a USB 2.0 or 3.0-compliant USB port and an Internet connection*
OS: Mac OS X 10.10 (Yosemite) or OS X 10.11 (El Capitan)**

Windows

Windows compatible computer with a USB 2.0 or 3.0-compliant USB port and an Internet connection*
OS: Windows 7 (32- or 64-bit), 8.1 and 10**

* Internet connection required for downloading on-line resources.

** System requirements are subject to change. Please check the following link for compatibility details:
www.focusrite.com/downloads/os

5

GETTING STARTED

IMPORTANT: PLEASE ENSURE THAT YOU INSTALL FOCUSRITE CONTROL BEFORE

CONNECTING THE INTERFACE TO YOUR COMPUTER.

NOTE THAT THE SECOND GENERATION SCARLETT 18i8 DOES NOT REQUIRE

SEPARATE USB DRIVERS TO BE INSTALLED FOR EITHER MAC OR WINDOWS.

FOCUSRITE CONTROL INCLUDES THE NECESSARY DRIVERS.

Software Installation

All software required by the Scarlett 18i8 - and several powerful and useful extras - are available for
download from the Focusrite website (www.focusrite.com/register). You will find a “Bundle Code”
printed on the inside of the box your Scarlett 18i8 comes in, and the Serial number can be found on
the underside of the unit. You will need to enter these when you access the downloads area of the
website; this procedure ensures that you will have the most up-to-date software versions.

To download the included softw are, you will need to register your Scar lett 18i8 at focusrite.com/r egister

You will need the product serial number, found on the b ottom of your 18i8 hardware.

Once you have entered the seria l number, you will be asked to enter your BUND LE CODE, found below:

PRODUCT BUNDLE CODE XXXXXX-XXXXXX-XXXXXX

For an in depth video tutorial, plea se go to focusrite.c om/get-started

DOWNLOADING THE INCLUDED SO FTWARE

Pour obtenir des instructions en Français sur la façon de commencer, veuillez-vous rendre sur focusrite.com/downloads

Für eine Kurzanleitung zum sc hnellen Start in deutscher Sp rache besuche bitte focusrite.co m/downloads

Para la guía de inicio en E spañol, diríjase a focusri te.com/downloads

所有使用说明中文版,请上网站: focusrite.com/downloads

日本語での説明書はこちら： focusrite.com/downloads

시작 방법에 관한 한국어 가이드는 focusrite.com /downloads 에서 찾으실 수 있습니다

1. Using your usual browser, go to www.focusrite.com/register/.

2. Follow the on-screen instructions, entering the Serial number and then the Bundle Code
(XXXXXX-XXXXXX-XXXXXX) into the form where prompted. Your Bundle Code is printed on the inside
of the gift box.

3. You will then be able to access the “My Products” page, where Focusrite Control and the other
software products to which your registration entitles you are available for download, complete with
activation codes where applicable.

4. Download and install the Focusrite Control version (Mac or Windows) appropriate for your
computer. Follow all on-screen instructions.

5. When the installation is complete, restart your computer.

6. After restart, connect the Scarlett 18i8 to your computer with the USB cable supplied.

This information is accurate as of May 2016, however we are constantly striving to improve the customer experience and as a result
this process is subject to change. If anything appears to have changed please refer to www.focusrite.com/get-started for the latest
info.

6

HARDWARE FEATURES

Front Panel

1

4

3

5

6

3

10 78

2 11

11

9

The Front Panel includes input connectors for Mic, Line and Instrument signals, the input gain and
monitoring controls, and sockets for headphones.

1. Inputs 1 and 2 – XLR Combo type input sockets - connect microphones, instruments (e.g.,
guitar), or line level signals via XLR or ¼” (6.35 mm) jacks as appropriate. Either ¼” TRS
(balanced) or TS (unbalanced) jack plugs can be used for instruments or line level signals.

2. Inputs 3 and 4 – XLR Combo type input sockets – as [1], but accept mic or line level signals
only. Direct connection of instruments should be via Inputs 1 and/or 2.

3. 48V – two switches enabling 48 V phantom power at the XLR contacts (mic inputs) of the
Combo connectors, in pairs (1 & 2; 3 & 4). The switch illuminates when phantom power is
selected.

4. GAIN 1 and GAIN 4 – adjust the input gain for the signals at Inputs 1 to 4 respectively. The
gain controls have concentric bi-colour LED ‘rings’ to confirm signal level: green indicates
an input level of at least -24 dBFS (i.e., ‘signal present’), the ring then turns red when signal
level reaches 0 dBFS.

5. INST – the input configuration for the jack contacts at Inputs 1 and 2 can be selected via
software from Focusrite Control. The green LEDs illuminate when INST is selected. With
INST selected, the gain range and input impedance are altered (relative to LINE), and the
input is made unbalanced. This optimises it for the direct connection of instruments (usually
via a 2-pole (TS) jack plug). When INST is off, the inputs are suitable for the connection of line
level signals. Line level signals may be connected either in balanced form via a 3-pole (TRS)
jack or unbalanced, via a 2-pole (TS) jack.

6. PAD – a 10 dB pad may be inserted in each of the four analogue input signal paths; these are
controlled via software from Focusrite Control. The pad increases the headroom of the input
stage, and should be used to reduce mic or line level signals which are ‘too hot’ (i.e., when the
gain halo is turning red while at minimum gain). It is not intended for use with the Instrument
inputs. The red LEDs illuminate when PAD is selected.

7

7.

USB LED – a green LED which illuminates when the unit is recognised by the computer

to which it is connected.

8. MIDI LED – a green LED illuminates when MIDI data is received at the MIDI IN port.

9. MONITOR – main monitor output level control – this is an analogue control and adjusts the
level at Outputs 1 and 2 on the rear panel.

10. MUTE – push this button to mute Outputs 1 and 2. The button illuminates when MUTE is
active.

11. – connect one or two pairs of stereo headphones at the two ¼” (6.25 mm) TRS jack sockets
below the headphone volume controls 1 and 2. The headphone outputs always carry the
signals that are currently routed to analogue outputs 3 & 4 and 5 & 6 respectively (as stereo
pairs) in Focusrite Control.

8

Rear Panel

12

12

13141516

17

13 1920

18

12. LINE INPUTS 5 to 8 – the inputs are balanced, on ¼” (6.35 mm) jack sockets. Connect further
line level sources here, using either ¼” TRS (balanced) or TS (unbalanced) jack plugs.

13. MONITOR OUTPUTS 1 and 2 – two balanced analogue line outputs on ¼” (6.35 mm) jack
sockets; use TRS jacks for a balanced connection or TS jacks for unbalanced. These will
generally be used for driving the main L and R speakers of your monitoring system; however,
the signals at the outputs may be defined in Focusrite Control.

14. OPTICAL INPUT – TOSLINK connector able to carry eight channels of digital audio in ADAT
format at 44.1/48 kHz sample rate or four channels at 88.2/96 kHz. These are simply additional
inputs (11 to 18) to the Scarlett 18i8. Note that the optical input is disabled when sample rates
of 176.4/192 kHz are in use.

15.

USB 2.0 port – Type B connector; connect the Scarlett 18i8 to your computer with the

cable supplied.

16. MIDI IN and MIDI OUT – standard 5-pin DIN sockets for connection of external MIDI equipment.
The Scarlett 18i8 acts as a “Break-out (and Break-in) Box”, allowing MIDI data to/from your
computer to be distributed to additional MIDI devices.

17. SPDIF IN and OUT – two phono (RCA) sockets carrying two-channel digital audio signals in and
out of the Scarlett 18i8 in S/PDIF format. These are essentially Inputs 9 and 10 and Outputs 7
and 8 to/from the unit. Like all the other inputs and outputs, signals at these connectors may
be routed in Focusrite Control.

18. External DC power input – power the Scarlett 18i8 via the separate AC adaptor (PSU) supplied
with the unit. Note that the Scarlett 18i8 cannot be powered via its USB port from the host
computer.

19. Power On/Off switch.

20. K (Kensington security lock) – secure your Scarlett 18i8 to a suitable structure if desired.
Please see www.kensington.com/kensington/us/us/s/1704/kensington-security-slot.aspx
for further information on how to use this feature.

9

Connecting your Scarlett 18i8

IMPORTANT: Before you connect your Scarlett 18i8 to your

computer, please complete the software installation according to the

instructions at page 5. This will ensure that the hardware uses the

correct drivers, and will prevent unexpected behaviour.

Power

Your Scarlett 18i8 should be powered from an external 12 V DC, 1 A mains adaptor. A suitable adaptor
is supplied with the unit.

IMPORTANT: We very strongly recommend that you only use the supplied mains adaptor. Failure to
use this adaptor is likely to permanently damage the unit and will also invalidate your warranty.

USB

Your Scarlett 18i8 has a single USB 2.0 port (on the rear panel). Once the software installation is
complete, simply connect it to your computer; we recommend you use the USB cable provided. (Note
that Scarlett 18i8 is a USB 2.0 device, and thus the USB connection requires a USB 2.0-compliant
port on your computer. It will not operate correctly with USB 1.0/1.1 ports, however typically a USB

3.0 port will support a USB 2.0 device.)

Mac OS X only:

Your OS should automatically switch the computer’s default audio inputs & outputs to the
Scarlett 18i8. To verify this, go to System Preferences > Sound, and ensure that the input and
output are set to Scarlett 18i8. For more detailed setup options on a Mac, open Applications >

Utilities > Audio MIDI Setup.

Windows only:

Your OS should automatically switch the computer’s default audio inputs and outputs to be the
Scarlett 18i8. To verify this go to: Start > Control Panel > Hardware and Sound > Sound

> Manage Audio Devices and ensure that ‘Default Playback’ and ‘Recording’ are set to

‘Scarlett 18i8’

10

Audio Setup in your DAW

The Scarlett 18i8 is compatible with any Windows-based DAW that supports ASIO or WDM or any Mac­based DAW that uses Core Audio. After installing Focusrite Control and connecting the hardware,
you can start using your Scarlett 18i8 with the DAW of your choice. To allow you to get started if
you do not already have a DAW application installed on your computer, both Pro Tools | First and
Ableton Live Lite are included; these will be available to you once you’ve downloaded and activated
your software online. To install either DAW, download and save the relevant installer file from your
registered Focusrite “My Products” page as described on page 5, and then run it, following all
on-screen instructions.

Operating instructions for Ableton Live Lite and Pro Tools | First are beyond the scope of this User
Guide, but both applications include a full set of Help files. You can also find a video tutorial on
getting started with Ableton Live Lite at www.focusrite.com/getting-started.

Please note - your DAW may not automatically select the Scarlett 18i8 as its default I/O device. In this
case, you must manually select the driver on your DAW’s Audio Setup* page (select Scarlett 18i8
for Mac or Focusrite USB 2.0 driver for Windows). Please refer to your DAW’s documentation (or
Help files) if you are unsure where to select the ASIO/Core Audio driver. The example below shows
the correct configuration in the Ableton Live Lite Preferences panel (Mac version shown).

*Typical name. Terminology may differ slightly between DAWs.

11

Once the Scarlett 18i8 is set as the preferred Audio Device* in your DAW, all 18 inputs and 8 outputs
will appear in your DAW’s Audio I/O preferences (note however that Ableton Live Lite is limited to a
maximum of four simultaneous mono input channels and four simultaneous mono output channels).
Depending on your DAW, you may need to enable certain inputs or outputs before use. The two
examples below show two inputs and two outputs enabled in Ableton Live Lite Audio Preferences.

*Typical name. Terminology may differ slightly between DAWs.

12

Example of Usage

The Scarlett 18i8 is an excellent choice for several different recording and monitoring applications.
Some typical configurations are shown below.

Connecting microphones and instruments

Stereo Keys

Stereo Keys

Amplifier

Guitar Bass

Microphones

Musician’s individual

foldback mixes

This setup illustrates a configuration for recording a group of musicians with DAW software on Mac or
PC. In this case, Inputs 1 and 2 are used for two guitars, while Inputs 3 and 4 are used for vocals. Two
stereo keyboards are connected to Inputs 5 to 8 at the rear. During recording, playback of the DAW
can be monitored on the loudspeakers (if they are in a separate room – otherwise use headphones!),
and Focusrite control can be configured to provide each vocalist with their own dedicated headphone
mix. This can consist of any mix of themselves, the other singer, the guitars and keyboards, plus any
other DAW tracks that may have already been recorded.

13

The front panel input sockets are XLR Combo type, which accept either an XLR male connector (you
will probably have one on the end of your microphone cable) or a ¼” (6.35 mm) jack plug. Note the
Scarlett 18i8 has no “Mic/Line” switch – the Focusrite preamplifier stage is automatically configured
for a microphone when you plug an XLR into the input, and for a line or instrument when you connect
a jack plug. Select INST in Focusrite Control (on the Device Settings page) if you are connecting a
musical instrument (like a guitar) via an ordinary 2-pole guitar jack, or LINE if you are connecting a
line level source such as the balanced output of an external audio mixer via a 3-pole (TRS) jack. Note
the Combo connector accepts both types of jack plug.

If you are using capacitor (condenser) microphones, press the 48V button to supply phantom power
to the mics. (In the example, this would be the 48V button for Inputs 3 and 4.) We recommend that
you don’t turn it on if you’re using any other type of mic. As the 48V button enables phantom power at
both inputs of a pair, it is best not to intermix condenser mics and other types (e.g., dynamics) in the
same pair, as the application of phantom power may cause damage to some types of non-condenser
microphones.

Channels 1 to 4 of the Scarlett 18i8 each have a PAD facility, selectable from Focusrite Control
(on the Device Settings page); switching the Pad into circuit reduces the input sensitivity by 10 dB.
You may find this useful if you are feeding the input from a line-level source when the output is
particularly “hot”.

Low Latency Monitoring

You will frequently hear the term “latency” used in connection with digital audio systems. In the
case of the simple DAW recording application described above, latency will be the time it takes for
your input signals to pass through your computer and audio software, and back out again via your
audio interface. While not an issue for most simple recording situations, under some circumstances,
latency can be a problem for a performer who wishes to record while monitoring their input signals.
This might be the case if you need to increase the size of your DAW’s recording buffer, which could
be necessary when you record overdubs on a particularly large project using many DAW tracks,
software instruments and FX plug-ins. Common symptoms of too low a buffer setting include audio
glitching (clicks and pops) or an unusually high CPU overhead within your DAW (most DAWs show
current CPU usage). Buffer size may be increased on Macs from within the DAW application itself,
while on PCs it is usually accessed on the DAW Setup Preferences page.

The Scarlett 18i8, in conjunction with Focusrite Control, allows “low latency monitoring”, which
overcomes this problem. You can route your input signals directly to the Scarlett 18i8’s headphone
outputs. This enables the musicians to hear themselves with ultra-low latency – i.e., effectively in
“real time” – along with the computer playback. The input signals to the computer are not affected
in any way by this setting. However, note that any effects being added to the live instruments by
software plug-ins will not be heard in the headphones in this case, although the FX will still be
present on the recording.

14

In the example, each vocalist is receiving his/her own monitor mix because they each have their
“own” Scarlett 18i8 headphone output. Focusrite Control lets you define up to four separate stereo
mixes (or eight mono) and these mixes may include previously recorded DAW tracks as well the
current input signals. Here, just two stereo mixes are being used.

Stereo Keys

Amplifier

Microphones

Musician’s individual

foldback mixes

Direct Monitoring

set up in

Focusrite Controller

Stereo Keys

When using Direct Monitoring, ensure that your DAW software is not set to route any inputs (what you
are currently recording) to any outputs. If it is, the musicians will hear themselves “twice”, with one
signal audibly delayed as an echo.

15

Connecting Scarlett 18i8 to loudspeakers

The 1/4” MONITOR OUTPUTS jacks on the rear panel will normally be used to send audio to monitoring
speakers. Self-powered monitors incorporate internal amplifiers with a volume control, and may be
connected directly. Passive loudspeakers will require a separate stereo amplifier; in this case, the
rear panel outputs should be connected to the amplifier’s inputs.

Active Speakers

Amplifier

Passive Speakers

All the line output connectors are 3-pole (TRS) ¼” (6.35 mm) jack sockets, and are electronically
balanced. Typical consumer (hi-fi) amplifiers and small powered monitors will probably have
unbalanced inputs, either on phono (RCA) sockets, or via a 3.5 mm 3-pole jack plug intended for
direct connection to a computer. In either case, use a suitable connecting cable with jack plugs at
one end.

Professional active monitors and professional power amplifiers will generally have balanced inputs.

NOTE: You run the risk of creating an audio feedback loop if loudspeakers are active at the same time
as a microphone! We recommend that you always mute (or turn off) monitoring loudspeakers while
recording, and use headphones when overdubbing.

16

Using the ADAT connection

In addition to the eight analogue inputs, the Scarlett 18i8 has an optical ADAT input port which can
provide an additional eight audio inputs at 44.1/48 kHz sample rate or four at 88.2/96 kHz. (Note
that the optical ADAT input port does not support 176.4/192 kHz sample rates.) Using a separate
8-channel microphone preamplifier equipped with an ADAT output – such as the Focusrite OctoPre
MkII – provides a simple and excellent method of expanding the Scarlett 18i8’s input capability.

Computer

running DAW

and F

ocusrite Control

Inputs 1 & 2 on front panel

Optical ADAT connection (TOSLINK)

Inputs 1 to 4 on front panel

Up to 16 Mic/Line Sources

Octopre

8ch Mic Amp

The OctoPre MkII’s ADAT output is connected to the Scarlett 18i8’s ADAT input with a single TOSLINK
optical cable. To synchronise the devices, set the clock source of the OctoPre MKII to Internal and
that of the Scarlett 18i8 (via Focusrite Control) to ADAT.

TIP: When interconnecting two digital devices by any method, always ensure that both are set
to the same sample rate.

The additional inputs realised by use of the ADAT port may be routed using Focusrite Control in
exactly the same manner as the other inputs. The additional inputs can form part of any musician’s
headphone mix, as required.

17

Using the Scarlett 18i8 as a stand-alone mixer

The Scarlett 18i8 has the ability to store a mix configuration defined in Focusrite Control within the
hardware. This feature lets you configure it – for example, as an on-stage keyboard mixer – using your
computer, and then upload the configuration to the device itself. Then you can use the Scarlett 18i8
as a simple local mixer as part of your keyboard rig to control the overall mix of multiple keyboards.

Stereo Keys

To FOH Mixer

Stereo Keys

Stereo Keys

In the example illustrated, three stereo keyboards are connected to the inputs of the Scarlett 18i8;
the Monitor Outputs go to the main PA system. The performer can adjust the volume of two of the
keyboards against the third from the front panel; he/she can also adjust the overall level of the
keyboard mix.

Greater flexibility of on-stage mixing could be achieved by connecting an OctoPre Mk II via the optical
ADAT port, as in the previous example; all keyboard sources could be connected directly to the
OctoPre Mk II, providing pre-input level control.

18

FOCUSRITE CONTROL

Focusrite Control software allows flexible mixing and routing of all audio signals to the physical
audio outputs, as well as control of output monitor levels. Sample rate selection and digital sync
options are also available from Focusrite Control.

NOTE: Focusrite Control is a generic product, and may be used with

other Focusrite hardware interfaces. When you connect an interface to

your computer and launch Focusrite Control, the model of interface is

automatically detected, and the software configured to suit the number of

inputs and outputs, and other facilities, available on the hardware.

IMPORTANT: A separate Focusrite Control User Guide can be downloaded

once you have completed the on-line registration process. This describes the

use of Focusrite Control in full detail, together with examples of application.

To open Focusrite Control:

Installing Focusrite Control on your computer will place an FC icon on the dock or desktop.
Click the icon to launch Focusrite Control.

Assuming that your Scarlett interface is connected to your computer with the USB cable, the Focusrite
Control GUI (Graphical User Interface) will appear as shown below (Mac version illustrated).

19

The following table provides the channel routings when preset option “Direct Routing” is selected
in Focusrite Control; see the screen image on page 18.

At 44.1 kHz and 48 kHz sample rates:

CH NO. INPUTS OUTPUTS

1 Input 1 Output 1
2 Input 2 Output 2
3 Input 3 Output 3
4 Input 4 Output 4
5 Input 5 Output 5
6 Input 6 Output 6
7 Input 7 S/PDIF 1
8 Input 8 S/PDIF 2

9 S/PDIF 1
10 S/PDIF 1
11 ADAT 1
12 ADAT 2
13 ADAT 3
14 ADAT 4
15 ADAT 5
16 ADAT 6
17 ADAT 7
18 ADAT 8

20

Please refer to the Focusrite Control User Guide for further details.

CH NO. INPUTS OUTPUTS

1 Input 1 Output 1
2 Input 2 Output 2
3 Input 3 Output 3
4 Input 4 Output 4
5 Input 5 Output 5
6 Input 6 Output 6
7 Input 7 S/PDIF 1
8 Input 8 S/PDIF 2

9 S/PDIF 1
10 S/PDIF 1
11 ADAT 1
12 ADAT 2
13 ADAT 3
14 ADAT 4
15
16
17
18

CH NO. INPUTS OUTPUTS

1 Input 1 Output 1
2 Input 2 Output 2
3 Input 3 Output 3
4 Input 4 Output 4
5 Input 5 Output 5
6 Input 6 Output 6
7 Input 7 S/PDIF 1
8 Input 8 S/PDIF 2

9 S/PDIF 1
10 S/PDIF 1
11
12
13
14
15
16
17
18

At 88.2 kHz and 96 kHz sample rates: At 176.4 kHz and 192 kHz sample rates:

21

SPECIFICATIONS

Performance Specifications

Configuration

Inputs 18: analogue (8), ADAT (8), S/PDIF (2)

Outputs 8: analogue (6), S/PDIF (2)

Mixer

Fully assignable 18-in/8-out software mixer
(Focusrite Control)

Digital Performance

Supported sample rates 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz and 192 kHz

Clock jitter <250 ps

Microphone Inputs

Frequency Response 20 Hz to 20 kHz, +0.5/-1.5 dB

Dynamic Rnge 109 dB (‘A’-weighted)

THD+N < 0.002%

Noise EIN –127 dBu

Maximum Input Level +8.5 dBu (without pad)

Gain Range 50 dB

Line Inputs 1 & 4

Frequency Response 20 Hz to 20 kHz, +0.5/-1.5 dB

Dynamic Range 109 dB (‘A’-weighted)

THD+N < 0.003%

Maximum Input Level +22 dB

Gain Range 50 dB

Line Inputs 5 & 8

Frequency Response 20 Hz to 20 kHz, +/-0.5 dB

Dynamic Range 110 dB (‘A’-weighted)

THD+N < 0.003%

Maximum Input Level +16 dB

22

Instrument Inputs

Frequency Response 20 Hz to 20 kHz, +0.5/-1.5 dB

Dynamic Range 109 dB (‘A’-weighted)

THD+N < 0.003%

Maximum Input Level +12 dBu

Gain Range 50 dB

Monitor Outputs 1 & 2

Frequency Response 20 Hz to 20 kHz, +/-0.5 dB

Dynamic Range 108 dB (‘A’-weighted)

THD+N < 0.001%

Maximum Output Level (0 dBFS) +16 dBu, balanced

Headphone Outputs

Frequency Response 20 Hz to 20 kHz, +/-0.5 dB

Dynamic Range 108 dB (‘A’-weighted)

THD+N < 0.001%

Maximum Output Level (0 dBFS) +13 dBu

23

Physical and Electrical Characteristics

Analogue Inputs 1 & 2

Connectors XLR Combo type: Mic/Line/Inst, on front panel

Mic/Line switching Automatic

Line/Instrument switching Via software from Focusrite Control

Phantom power Shared +48 V phantom power switch for inputs 1 and 2

Analogue Inputs 3 & 4

Connectors XLR Combo type: Mic/Line/Inst, on front panel

Mic/Line switching Automatic

Phantom power Shared +48 V phantom power switch for inputs 3 and 4

Analogue Outputs 1 to 6

Connectors (Outputs 1 & 2) 2 x balanced ¼” TRS jacks on rear panel

Stereo headphone outputs
(Outputs 3 to 6)

2 x ¼” TRS jacks on front panel

Main monitor output level control

On front panel

Headphones level controls

Other I/O

ADAT

TOSLINK optical connector
8 channels @ 44.1/48 kHz or 4 channels @ 88.2/96 kHz

S/PDIF I/O 2 x phono (RCA)

USB 1 x USB 2.0 Type B connector

MIDI I/O 2 x 5-pin DIN sockets

Weight and Dimensions

W x D x H

192 mm x 66 mm x 229 mm

7.56” x 2.6” x 9.02”

Weight

1.68 kg

3.70 lb

24

TROUBLESHOOTING

For all troubleshooting queries, please visit the Focusrite Answerbase at

https://support.focusrite.com/hc/en-gb/requests/new where you will find articles covering

numerous troubleshooting examples.

COPYRIGHT AND LEGAL NOTICES

Focusrite is a registered trade mark and Scarlett 18i8 is a trade mark of Focusrite Audio
Engineering Limited.

All other trade marks and trade names are the property of their respective owners.
2016 © Focusrite Audio Engineering Limited. All rights reserved.

GET STARTED WITH SCARLETT 6i6, 18i8 & 18i20

Thanks for choosing the Scarlett 2nd Gen. as your audio interface.
For an in depth video tutorial, please go to focusrite.com/get­started or see the quick step guide below...

Mac Users

1. Please go to: focusrite.com/register

2. Enter your serial number, found on the bottom of your hardware

3. Then, enter your PRODUCT BUNDLE CODE found on the
inside of the product box

4. Download and install the Focusrite Control software installer for
your operating system

5. Run the installer

6. Connect your Scarlett audio interface with the included IEC
power cable, connect the device to your Mac using the included
USB cable then power up the unit

7. Go to "System Preferences" then "Sound" and select your
Scarlett Eg. "Scarlett 18i20" as the input and output device

8. You are now ready to use your audio interface

(Please Note: You may need to select the Scarlett as your
interface within your music software preferences)

Windows Users

1. Please go to: focusrite.com/register

2. Enter your serial number, found on the bottom of your hardware

3. Then, enter your PRODUCT BUNDLE CODE found on the
inside of the product box

4. Download and install the Focusrite Control software installer for
your operating system (includes drivers)

5. Run the installer

6. Connect your Scarlett with the included IEC power cable,
connect the device to your PC using the included USB cable then
power up the unit

7. Go to "CONTROL PANEL" then "SOUND" and select your
Scarlett Eg. "Scarlett 18i20" as the playback and recording default
device

8. You are now ready to use your audio interface

(Please Note: You may need to select the Scarlett as your
interface within your music software preferences)

DOWNLOADING THE INCLUDED SOFTWARE

To download the included software, you will need to register your
Scarlett at focusrite.com/register

You will need the product serial number, found on the bottom of
your hardware

Once you have entered the serial number, you will be asked to
enter your PRODUCT BUNDLE CODE, found printed on the inside
of the product box in the following format:

XXXXXX-XXXXXX-XXXXXX

This info is accurate as of May 2016, however we are constantly
striving to improve the customer experience and as a result this
process is subject to change. If anything appears to have changed
please refer to www.focusrite.com/get-started for the latest info.

Focusrite is a trademark of Focusrite Audio Engineering Limited
registered in the UK and other countries. Scarlett 6i6, Scarlett 18i8
and Scarlett 18i20 are trademarks of Focusrite Audio Engineering
Limited registered in the UK and other countries. 2016 © Focusrite
Audio Engineering Limited. All rights reserved.

!

!
!

Important Safety Precautions

CAUTION:
USER---SERVICEABLE
ATTENTION :
LE

DOS).

TOUTE
The lightning flash

the

user

that

may be

Le

A

WARNING:

MOISTURE

AVERTISSEMENT:

TO

AND

REDUCE

OBJECTS

POUR

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RISK

FILLED

WITH

PREVENIR

OF

symbole d'eclair
l'utilisateur
tension

The exclamation

presence

accompanying the appliance.

Le

point
presence d'instructions importantes de
Ia

documentation accompagnant

FIRE

OR

LIQUIDS,

TOUT

DANGER

Environmental Declaration

I

Precautions importantes de

TO

REDUCE

THE

RISK

OF

PARTS

POUR

AUCUNE

REPARATION

to

d'amplitude

of

d'exclamation dans un

ELECTRIC

REDUIRE

PIECE

A

DU

with

the

presence

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sufficient magnitude

a

de

pointe de

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presence d'une "tension

suffisante pour constituer un risque

point

important

within
operating and maintenance (servicing) instructions in

SHOCK,

SUCH

AS

VASES,

D'INCENDIE

PLUIE

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A

L'HUMIDITE.

ELECTRIC

INSIDE.

REFER

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arrowhead symbol,

of

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fleche

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triangle equilateral

l'appareil.

DO

NOT

SHOULD

OU

DE

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DE

PAR

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to

constitute a risk

dans un

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fonctionnement

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TO

CHOC

ELECTRIQUE,

L'UTILISATEUR

within

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triangle equilateral

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est destine

THIS

BE

PLACED

N'EXPOSEZ

DO

intended

securite

NOT

REMOVE

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(OR

QUALIFIED

of

non

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et

APPLICANCE

SERVICE

NE

RETIREZ

A

L'INTERIEUR.

is intended

within

electric

the product's enclosure

shock

to

est destine

isolee

dans !'enceinte du produit,

pour

to

alert

the

a

alerter

de maintenance (reparation) dans

l'utilisateur

TO

ON

THIS

APPARATUS

PAS

CET

APPAREIL

BACK).

PERSONNEL.

PAS

LE

CAPOT

CONFIEZ

to

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alerter

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personnes.

user

to

the

the

literature

de

RAIN

OR

A

NO

(NI

alert

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LA

Compliance

Product Identification:
Responsible
Address:

party:

Information Statement:

Focusrite
American Music and Sound
4325 Executive Drive
Suite

300

Scarlett

2i2

(2nd

Gen)

Declaration

Southaven
MS

Telephone:

38672

800-431-2609

This device
interference, and (2) this device must accept any interference received, including interference

For

1.

Do
Modifications

2.

Important
quality shielded cables
and televisions and void your

3. Note: This
limits

can radiate radio frequency energy and,
communications. However, there
interference
the

Reorient
Increase
Connect
Consult

complies

with

USA

•··

to

the

User:

not

modify

this

unit!

not

expressly approved by Focusrite may void your authority, granted by

:

This

product

or

equipment

are designed

interference by one

or

relocate the receiving antenna

the separation between the

the

the

dealer

to

to

radio

or

equipment

or

has
provide

an

part 15

of

the

FCC

Rules.

Operation

This product, when

satisfies

FCC

to

follow

FCC

authorization

been tested and found

reasonable

is
television
or

into

reception, which

more

of

an

outlet

experienced radio/TV technician

installed

as

regulations when high

the installation instructions

no guarantee

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equipment

to

use this product in

to

protection against

if

not

following

on a circuit

comply

installed and used in accordance

that

can

measures:

and receiver

different

is

subject

to

the

following

indicated in the instructions contained in this

quality

shielded cables

within

this

manual

the

USA

.

with

the

limits

for

a

harmful

interference

be determined by

for

from

help

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interference in a residential installation. This

to

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with

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occur in a particular installation.

turning

which the receiver

of

Compliance

two

conditions: (1) This device may

that

may cause undesired operation.

FCC,

to

to

connect

off

is

connected

manual,

use

and on,

the

are used

may cause magnetic interference

B

digital device, pursuant

the instructions, may cause

the equipment

procedure

meets

this product.

with

other

to

If

this

the

FCC

equipment.

with

part

15

equipment

harmful

equipment

user

is

encouraged

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cause

requirements.

Failure

appliances such

of

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FCC

generates, uses and

interference

does cause

to

harmful

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use high

Rules.

to

radio

try

as

radios

These

harmful

to

correct

For Canada ­This
Cet appareil

RoHS

Focusrite Audio Engineering Limited
on Restrictions

25214.10.2, and 58012,

Class

Notice

B

to

the

User:

digital apparatus

numerique de

of

Hazardous Substances

Health

complies

Ia

classe

with

Best

has

and Safety

Canadian ICES--003

conforme

conformed and this

(RoHS)

Code;

a

Ia

norme NMB---003 du

as

product

the

as

well

Section 42475.2,

Canada.

conforms, where

following sections

Public

Resources

applicable,

of

California law

Code.

to

the European Union's Directive 2011/65/EU

which refer

to

RoHS,

namely sections 25214.10,

FFFA001303-01

Important Safety Instructions

1.

Read

these instructions

2.

Keep these instructions

3.

Heed

all

warnings

4.

Follow all instructions

5.

Do

not

<I

use this apparatus near

6.

Clean

only

with

dry

cloth

7.

Do

not

install

near any heat sources such

produce heat

8.

Do

not

defeat

the

safety purpose

than

the

other. A grounding type plug has
provided
obsolete
Protect

9.

where
The socket---outlet

10.
Only

11.

Use

12.
cart
Unplug this apparatus during lightning storms

13.

Refer

14.
such
apparatus
No naked flames, such

15.

for

your

safety.

outlet

the

power

cord

they

exit

from

the apparatus

shall

use attachments/accessories specified by

only

with

the cart, stand,

is

used, use caution

all

as

power

servicing

to

---supply cord

has

been exposed

qualified service

water

of

the

If

the

provided plug does

from

being walked on

be

installed

when

as

lighted candles, should be placed on

tripod,
moving

or

plug

to

rain

near

is

or

as

radiators, heat registers, stoves,

polarized

bracket,

the

personnel.
damaged, liquid

moisture, does

or

grounding---type plug. A polarized plug has

two

blades and a

not

or

pinched particularly

the

equipment

the

manufacturer

or

table specified by

cart/apparatus

or

when
Servicing

third

fit

into

and shall

combination

unused

is

required

has

been

not

operate

or

grounding prong. The

your

outlet,

consult

at

plugs, convenience

be easily accessible

the

manufacturer,

to

avoid

for

long periods

when

the

spilled

or

objects have

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apparatus

normally,

or

other

apparatus

two

wide

blade

an

electrician

receptacles,

or

sold

with

injury

from

tip---over

of

time

apparatus

has been dropped.

has

been damaged in any way,

fallen

into

(including

for

the

amplifiers)

blades

with

or

the

third

replacement

and

the

apparatus. When a

apparatus,

one

prong are

of

the

point

the

that

wider

the

WARNING:

Instructions de

(I

Excessive sound pressure
This

equipment

must

securite importantes

1.

Lisez

ces

instructions

2.

Conservez

3.

Tenez

4.

Suivez

5.

N'utilisez pas cet appareil avec de l'eau

6.

Nettoyez---le

7.

Ne bloquez aucune

8.

Ne
amplificateurs)

9.

Ne supprimez pas le
dont
de
rem placement de

10. Evitez que
sortie de l'appareil

11. N'utilisez que des fixations/accessoires

12. N'utilisez
un chariot, prenez garde lors du deplacement de

13. Debranchez cet appareil

14.

Confiez

endommage de quelque
liquide
l'humidite,

ces

instructions

compte

de tous

toutes

les

uniquement

l'installez

terre

pas

qui

une plus large que

servent

a

le

cordon

qu'un

chariot, stand,

toute

reparation

a

ete

renverse sur l'appareil ou

ne

fonctionne

instructions

ouverture

pres

d'une

produit

dispositif

votre
Ia

prise obsolete
d'alimentation

levels

from

earphones and headphones can cause hearing loss

only

be connected

les

avertissements

avec un

chiffon

de

ventilation.lnstallez---le

source de chaleur de

de

Ia

chaleur

de

securite que represente
I' autre. Une fiche de
securite.

Si

trepied,

durant

les

a

un personnel de maintenance qualifie . Une reparation est necessaire

fa~;on

que

pas

normalement

to

USB

a

proximite

doux

terre

Ia

fiche

fournie

ne soit

pietine

specifies

fixation ou table

orages ou en

ce

soit,

notamment

sides

objets

ouest

2.0

type

ports

conformement

type

radiateur, bouche de chaleur,

Ia

fiche

polarisee

a deux bornes

ne

rentre

ou

pince,

par

le

fabricant

specifie

I'

ensemble chariot/appareil

cas

de non

si

sont

tombe

et

une troisieme

pas

dans

votre

particulierement

par

le fabricant, ou vendu avec

utilisation prolongee

le

cordon

d'alimentation

tombes

a

l'interieur,

aux instructions du

poele

ou de terre. Une fiche

pour

prise, consultez un electricien

au

niveau des fiches, des multiprises

a

ne pas

ou

si

l'appareil est expose

fabricant

ou

autre

appareil

polarisee

Ia

terre.

La

lame large ou

pour

l'appareil.

etre

blesse par un renversement

si

sa

fiche

sont

Si

l'appareil a

endommages,

a

Ia

pluie ou

(dont

des

a deux lames

Ia

borne

le

et

de

vous utilisez

ete

si

du

a

Ia

AVERTISSEMENT:

Des

niveaux de pression sonore excessifs

Cet

equipement

doit

etre

connecte

au

casque

uniquement

et

dans des ecouteurs

a

des ports

USB

de type 2.0

peuvent

entralner

une

perte

auditive

FFFA001303-01