Focusrite Scarlett 18i20 USB-C Audio/MIDI Interface (3rd Generation) User Manual
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At 88 .2 kHz and 96 kHz sample rates:
INPUTS
DIGITAL I/O MODE
COAXIAL S/
PDIF
OPTICAL S/
PDIF
DUAL ADAT
Input 1
Input 1
Input 1
Input 1
Input 2
Input 2
Input 2
Input 2
Input 3
Input 3
Input 3
Input 3
Input 4
Input 4
Input 4
Input 4
Input 5
Input 5
Input 5
Input 5
Input 6
Input 6
Input 6
Input 6
Input 7
Input 7
Input 7
Input 7
Input 8
Input 8
Input 8
Input 8
Loopback 1 Loopback 1
Loopback 1
Loopback 1
Loopback 2 Loopback 2
Loopback 2
Loopback 2
Digital In 1
S/PDIF 1
(via co-ax
socket)
S/PDIF 1
(via optical
port)
ADAT 1.1
Digital In 2
S/PDIF 2
(via co-ax
socket)
S/PDIF 2
(via optical
port)
ADAT 1.2
Digital In 3
ADAT 1. 1
ADAT 1. 1
ADAT 1.3
Digital In 4
ADAT 1. 2
ADAT 1. 2
ADAT 1.4
Digital In 5
ADAT 1. 3
ADAT 1. 3
ADAT 2.1
Digital In 6
ADAT 1. 4
ADAT 1. 4
ADAT 2.2
Digital In 7
x
x
ADAT 2.3
Digital In 8
x
x
ADAT 2.4
OUTPUTS
DIGITAL I/O MODE
COAXIAL
S/PDIF
OPTICAL
S/PDIF
DUAL
ADAT
DUAL
ADAT
OUTPUT
PRESET*
Output 1
Output 1
Output 1
Output 1
Output 1
Output 2
Output 2
Output 2
Output 2
Output 2
Output 3
Output 3
Output 3
Output 3
Output 3
Output 4
Output 4
Output 4
Output 4
Output 4
Output 5
Output 5
Output 5
Output 5
Output 5
Output 6
Output 6
Output 6
Output 6
Output 6
Output 7
Output 7
Output 7
Output 7
Output 7
Output 8
Output 8
Output 8
Output 8
Output 8
Output 9
Output 9
Output 9
Output 9
Output 9
Output 10
Output 10
Output 10 Output 10 Output 10
Output 11
S/PDIF 1
(via co-ax
socket)
S/PDIF 1
(via co-ax
socket
and
optical
port)
S/PDIF 1
(via co-ax
socket)
ADAT 1. 1
Output 12
S/PDIF 2
(via co-ax
socket)
S/PDIF
2 (via
coaxial
socket
and
optical
port)
S/PDIF 2
(via co-ax
socket)
ADAT 1. 2
Output 13
ADAT 1. 1 ADAT 1. 1 ADAT 1. 1 ADAT 1. 3
Output 14
ADAT 1. 2 ADAT 1. 2 ADAT 1. 2 ADAT 1. 4
Output 15
ADAT 1. 3 ADAT 1. 3 ADAT 1. 3 ADAT 2.1
Output 16
ADAT 1. 4 ADAT 1. 4 ADAT 1. 4 ADAT 2.2
Output 17
x
x
ADAT 2.1 ADAT 2.3
Output 18
x
x
ADAT 2.2 ADAT 2.4
Output 19
x
x
x
x
Output 20
x
x
x
x
*In order to obtain eight ADAT output channels, please select
Focusrite Control’s DUAL ADAT OUTPUT preset.