Focusrite Scarlett 18i20 18x20 USB Audio Interface (3rd Generation)

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Description & Details


  • For Bands & Recording Engineers
  • High-Performance 24-Bit / 192 kHz AD/DA
  • 8 x Scarlett Preamps w/ XLR-1/4" Inputs
  • MIDI, S/PDIF & 8-Channel ADAT I/O
  • Switchable Air Mode Enhances Brightness

Focusrite Scarlett 18i20 18x20 USB Audio Interface (3rd Generation) Description

Ideal for bands and recording engineers, the third-generation Focusrite Scarlett 18i20 is a rack-mountable 18x20 USB audio interface offering high-performance hardware, comprehensive I/O, customizable mic tone, and a creative software bundle. The eight improved Scarlett microphone preamps feature switchable phantom power, input pads, and selectable Air circuits, which add brightness based on Focusrite's legendary ISA preamplifier. The first two XLR-1/4" combo inputs can accept unbalanced instrument level from guitars and basses, and synthesizers and drum machines, or balanced line level from a mixing console or outboard preamps, while combo inputs 3-8 support mic- or line-level sources.

Utilize the dual ADAT optical input and output ports to interface external 8-channel AD/DA converters (available separately). The Scarlett 18i20's 24-bit / 192 kHz converters ensure that signals are captured and reproduced with detail and clarity. With four balanced 1/4" line/monitor outputs, six additional 1/4" line outs, two 1/4" stereo headphone jacks, and independent control of the headphone and speaker volume settings, the Scarlett 18i20 can simultaneously feed multiple monitoring systems and outboard effects processors. Plus, the onboard talkback feature and built-in talkback mic streamline the task of communicating with your artists during recording sessions. Traditional 5-pin MIDI I/O is provided for seamless integration of MIDI equipment such as a keyboard or sound module, and S/PDIF coaxial ports allow proper routing of stereo digital gear. The Scarlett 18i20 connects to your Mac or Windows computer via USB and is powered through a connection to a standard AC outlet. The extensive software bundle includes music production software, virtual instruments, plug-in effects, loops, and more—plenty of tools to kick-start your inspiration.


  • 1 x Focusrite Scarlett 18i20 18x20 USB Audio Interface (3rd Generation)
  • 1 x USB Type-C to USB Type-A Cable
  • 1 x IEC Power Cable
  • 1 x Limited 2-Year Warranty


Codes 0815301005216 (EAN)

It might be necessary for band kids to find out that the listed MPN for this item is SCARLETT-18I20-3G. Hunting for extra products from Focusrite? OnBuy's online collection from this popular brand is on standby to help you create your next groove!

Product Images

Focusrite scarlett i x usb audio interface image 1
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Focusrite scarlett i x usb audio interface

Product Data


Channels of I/OAnalog:8Inputs/10Outputsat192kHzDigital:10Inputs/10Outputs
Max Sample Rate/Resolution192kHz / 24-Bit
Display and Indicators8 x Multi-Segment LED Meters(Input Level)2 x LEDs(+48V)2 x LEDs(Input Selection)8 x LEDs(Pad)1 x LED(Host Connection)1 x LED(MIDI)1 x LED(Output Selection)1 x LED(Dim)1 x LED(Mute)


Host Connection1 x USB Type-C(USB 2.0)
Analog I/O2 x Combo XLR-1/4" TRSBalanced/UnbalancedMic/Line/Hi-ZInput6 x Combo XLR-1/4" TRSBalancedMic/LineInput10 x 1/4" TRSBalancedLineOutput2 x 1/4" TRSUnbalancedHeadphoneOutput
Phantom Power+48 V(on 8 Channels)
Digital I/O1 x RCA Coaxial/S/PDIFInput1 x RCA Coaxial/S/PDIFOutput1 x TOSLINK/ADAT, S/MUXInput1 x TOSLINK/S/MUXInput1 x TOSLINK/ADAT, S/MUXOutput1 x TOSLINK/S/MUXOutput1 x BNC(Word Clock)Output
MIDI I/O1 x 5-Pin MIDIIn1 x 5-Pin MIDIOut
Memory Card SlotNone


Frequency Response20Hzto20kHz±0.1dB
Gain RangeMic/Line Inputs:56dB
Max Input LevelMic Inputs:+9dBu(Min Gain)+16dBu(Min Gain, Pad On)Hi-Z Inputs:+12.5dBu(Min Gain)+14dBu(Min Gain, Pad On)Line Inputs:+22dBu(Min Gain)+29.5dBu(Min Gain, Pad On)
Max Output LevelLine Outputs:+15.5dBu(Balanced)Headphone Outputs:+7dBu
Dynamic RangeMic Inputs:111dBAHi-Z Inputs:110dBALine Inputs:110.5dBALine Outputs:108.5dBAHeadphone Out:104dBA
ImpedanceMic Inputs:3kOhmsHi-Z Inputs:1.5MOhmsLine Inputs:60kOhmsLine Outputs:430OhmsHeadphone Outputs:<1Ohm
THD+NMic Inputs:Hi-Z Inputs:Line Inputs:Line Outputs:Headphone Outputs:<0.002%
EINMic Inputs:-128dB(A-Weighted)

Digital Audio

Sample RatesUp to192kHz(AD/DA Conversion)
Bit DepthUp to24-Bit(AD/DA Conversion)
Sync SourcesADAT, Internal, S/PDIF


OS CompatibilitymacOSWindows
Required HardwareAvailableUSB 2.0 PortUSB Cable(Included)
Internet ConnectionRequired forSoftware/Driver Download


Power RequirementsAC Input
AC Input Power100to240VAC at50/60Hz
Power Consumption30W


Anti-Theft FeaturesNone
Rackmount Size1RU(with Included Hardware)
Dimensions19 x 10.23 x 1.83" / 48.26 x 25.98 x 4.65cm
Weight7.0lb / 3.2kg(Without Accessories)7.9lb / 3.6kg(With Accessories)

Packaging Info

Package Weight9.48 lb
Box Dimensions (LxWxH)23.7 x 12.8 x 3.5"

Focusrite scarlett i x usb audio interface Pricing

Prior to running out, this musical item had a price of £565.65. By finding the best musical products from the Studio & Recording Equipment category, our dedicated team has done all the frustrating hard work already for our shoppers. We list 430 various Audio Interfaces, with the most popular products being Multimedia Player with CD/USB/SD & FM Tuner and Behringer U-PHORIA UM2 2x2 USB Audio Interface UM 2 B&H Photo.

Price Graph

Price history - lowest £565.65 (28/02/2021)

Product price history A line chart showing the price history for Focusrite Scarlett 18i20 18x20 USB Audio Interface (3rd Generation). £565.65 - 09/02/2021 £565.65 - 28/02/2021 09/02/2021 11/02/2021 13/02/2021 15/02/2021 17/02/2021 19/02/2021 21/02/2021 23/02/2021 25/02/2021 27/02/2021 £6,550.00 £5,550.00 £4,550.00 £3,550.00 £2,550.00 £1,550.00 £550.00

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