Scarlett 18i20 (Gen3)
USB 2.0 audio interface with eight Focusrite mi preamps
With its versatile complement of no less than 20 outputs and 18 inputs – including eight of Focusrite’s award-winning Focusrite microphone preamplifiers designed specifically for the computer interface environment and delivering legendary Focusrite sound quality – the rack-mounting 18i20 quite literally forms the heart of the modern digital studio, combining the central features of Focusrite’s USB 2.0 audio interface range: mic preamps that build on 30 years of experience and precision 24/96 analogue/digital conversion for the very best quality into and out of your DAW

Focusrite mic preamps, backed by 30 years of design experience and found in the world’s top studios, give the 18i20 an unequalled level of performance, with low noise, minimal distortion and enormous dynamic range. Dual front-panel inputs also offer 10dB pad buttons to handle the highest-level inputs. 18i20 supports both Macintosh and Windows computers as well as the iPad (Camera Connection Kit required).
Comprehensive inputs/outputs
With its 18 inputs and 20 outputs, Scarlett 18i20 has the I/O capability to take on the vast majority of day-to-day studio tasks with maximum quality and maximum flexibility. Scarlett 18i20 features six combo XLR/jack mic/line inputs plus two front-panel XLR/jack mic/line/instrument inputs with 10dB pad buttons, 10 analogue line outputs two providing independent headphone outputs on the front panel, and ADAT and S/PDIF digital I/O. Use the additional ADAT interface to bring in digital sources or to add preamps such as Focusrite’s OctoPre Mk II, bringing the mic pre complement to 16 channels – ideal for recording a complete band. 18i20 also provides MIDI I/O and Word Clock out for digital synchronisation when required.

Input and Output
In |
Count |
Format |
Connector |
Details |
8 |
Mic/line analogue |
Combi XLR |
Including 2 instrument inputs |
2 |
S/PDIF |
RCA Phono |
|
8 |
ADAT |
Optical Lightpipe |
4 channels via SMUX 2 96kHz |
16 |
MIDI |
5pin DIN connector |
Provides 16 channels of MIDI |
Out |
2 |
Line analogue |
¼” TRS Jack |
Dedicated monitor outputs |
8 |
Line analogue |
¼” TRS Jack |
4 outputs (7/8 & 9/10) are also available via the 2 independently controlled, stereo headphone ¼” Jack on the front panel
|
2 |
S/PDIF |
RCA Phono |
|
8 |
ADAT |
Optical Lightpipe |
4 channels via SMUX @ 96 kHz |
16 |
MIDI |
5pin DIN connector |
Provides 16 channels of MIDI |
Specifications
Digital Performance
|
A-D Dynamic Range
|
109 dB A-weighted (all inputs)
|
D-A Dynamic Range
|
108 dB A-weighted (line outputs)
|
Supported sample rates
|
44.1 kHz, 48 kHz, 88.2 kHz A 96 kHz
|
Clock jitter
|
<250 ps
|
Microphone Inputs
|
Frequency Response
|
20 Hz ± 0.5 dB, 20 kHz ± 0.1 dB (min. gain)
|
THD+N
|
0.001% (1 kHz, –1dBFS, 20 kHz BW)
|
Noise EIN
|
–122 dBu CCIR-RMS (measured at 60 dB of gain with 150 ohm termination)
|
Maximum input level
|
+8 dBu (without pad)
|
Line Inputs
|
Frequency Response
|
20 Hz – 20 kHz ± 0.1 dB
|
THD+N
|
0.007% (1 kHz, –1dBFS, 20 kHz BW)
|
Noise (NiPoS)
|
–105 dBFS CCIR-RMS (measured at min. gain with 50 ohm termination)
|
Maximum input level
|
> +28 dBu
|
Instrument Inputs
|
Frequency Response
|
20 Hz – 20 kHz ± 0.1 dB
|
THD+N
|
0.007% (1 kHz, –1dBFS, 20 kHz BW)
|
Noise (NiPoS)
|
–103 dBFS CCIR-RMS (measured at min. gain)
|
Maximum input level
|
+8 dB (without pad)
|
Line Outputs 1 & 2
|
Maximum Output Level (0 dBFS)
|
+16 dBu, balanced
|
THD+N
|
0.001% (1 kHz, –1dBFS, 20 kHz BW)
|
Weight and Dimensions
- Weight:3.4Kg
- Height:45 mm
- Width:482 mm
- Depth:265 mm