Focusrite Scarlett 18i20 4th Gen USB Audio Interface
Scarlett 18i20 is the ultimate studio hub for demanding project studios. Fully equipped with 18 inputs and 20 outputs, including eight of our most detailed ultra-low-noise mic preamps, line, Hi-Z, and MIDI connections for your drums, vocals, guitars, keys, and synths. Focusrite Control 2 provides flexible routing and mixing options, allowing you to customise 18i20’s independent outputs to suit the needs of any recording session. Expand and sync your setup with ADAT, S/PDIF, and Word Clock connections.
Air mode, with Presence and Harmonic Drive, brings the sound of big studio consoles to your recordings, while Auto Gain and Clip Safe ensure you never worry about levels. Low-latency monitoring, A/B speaker switching, and a built-in talkback mic are perfect for serious project studios. The Hitmaker Expansion software bundle has all the tools you need to record, produce, and release your tracks. And the Focusrite Control 2 desktop and mobile apps enable you to remotely control your Scarlett anywhere in the studio.
Eight remote-controllable preamps
122dB dynamic range
Auto Gain and Clip Safe
Two Air modes
Control remotely via mobile app
Expandable I/O
Eight of our most detailed, ultra-low-noise preamps.
Auto Gain and Clip Safe.
All the I/O you need
Play your instruments.
Connect a guitar directly to 18i20’s Hi-Z inputs for an amp-like feel, plug synths and grooveboxes into the eight line inputs, or route your favourite outboard gear through the ten line outputs.
Control MIDI devices.
Use 18i20 as a MIDI interface to receive and send data to your favourite external MIDI-controllable equipment.
Expand your setup.
Increase your channel count with up to 10 additional inputs and outputs by using the S/PDIF and ADAT connections. Dual ADAT supports eight channels of audio at 96kHz. The Word Clock output ensures your external gear stays perfectly synced.
Mix your way, with independent outputs.
Get that big console sound with two re-engineered Air modes.
Presence mode boosts your signal’s high-end, bringing the sound to the front of the mix. Create intimate vocal recordings, capture every detail of acoustic guitars, and hear your drum overheads shimmer.
Presence and Harmonic Drive mode boosts mid-range harmonics in your sound, making its unique character shine through the mix. Try it on guitars, vocals, or anything else that needs a little more punch.
Huge 122dB dynamic range for incredible recordings.
Powerful sound, powerful control.
All the software you need to make a hit record.
Focusrite Control 2
Focusrite Control 2 is a powerful app that easily manages Scarlett 4th Gen interfaces on Windows and macOS devices. Pair the iOS and Android app to your desktop computer to remotely control your Scarlett from anywhere in your recording space.
Specifications in detail
Overview
Number of Microphone Preamps8
Phantom PowerYes (Independent)
Instrument Inputs2
Line Inputs8
Air ModeYes
Auto GainYes
Clip SafeYes
Line Outputs10
Headphone Outputs2
ADAT Inputs2 (up to 8 channels at 96kHz)
ADAT Outputs2 (up to 8 channels at 96kHz)
SPDIF Inputs1
SPDIF Outputs1
SPDIF Outputs1
MIDI Inputs1
MIDI Outputs1
TalkbackYes
LoopbackYes
ConnectivityUSB Type-C
ProtocolUSB 2.0
Form FactorDesktop / Rack Mountable (1U)
Simultaneous I/O20 x 24 (including Loopback)
A/D Resolution24-bit/192 kHz
Bus PoweredNo
Dimensions
Height46.55mm
Width259.73mm
Depth442mm
Weight3.304kg
Supported sample rates
44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
Microphone inputs
Frequency Response20-20kHz ± 0.06dB
Dynamic Range116dB (A-Weighted)
THD+N-100dB @ 8dB gain
Noise EIN-127dBu (A-Weighted)
Maximum Input Level16dBu
Gain Range69dB
Impedance3kΩ
Variable Line inputs
Frequency Response20-20kHz ± 0.05dB
Dynamic Range115.5dB (A-Weighted)
THD+N-100dB @ 8dB gain
Maximum Input Level22dBu
Gain Range69dB
Impedance24kΩ
Instrument inputs
Frequency Response20-20kHz ± 0.05dB
Dynamic Range113dB (A-Weighted)
THD+N-80dB @ 8dB gain
Maximum Input Level12dBu
Gain Range62dB
Impedance1MΩ
Line outputs (Balanced)
Frequency Response20-20kHz ± 0.02dB
Dynamic Range122dB (A-Weighted)
THD+N-112dB
Maximum Output Level16dBu
Impedance200Ω
Headphone outputs
Frequency Response20-20kHz ± 0.1dB @ 33Ω / 300Ω
Dynamic Range112dB @ 33Ω
116dB @ 300Ω
THD+N-100dB @ 33Ω (Minimum)
-110dB @ 300Ω (Minimum)
Maximum Output Level5dBu into 33Ω
11dBu into 300Ω
Maximum Output Power57mW into 33Ω
27mW into 300Ω
Impedance11Ω
Analogue to Digital Converter
THD+N-110dB
Dynamic Range120dB
Digital to Analogue Converter
THD+N-115dB
Dynamic Range130dB (A-Weighted)
Power
External30W
What’s in the box
Scarlett 18i20 audio interface
1.5m USB-C to USB-C cable
USB-C to USB-A adaptor
IEC power cable
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