Focusrite Scarlett 18i20 (3rd ...

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Focusrite Scarlett 18i20 (3rd Gen) USB Interface

RRP £499.99 Save £80.99


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Manufacturer's ID: MOSC0029

What we say:

At A Glance:

Focusrite Scarlett 18i20 (3rd Gen) is a rack-mountable USB audio interface that features eight combination inputs and 10 line outputs and is expandable to add an extra 8 ins and outs. 18i20 has many extra features including a built-in talkback microphone, four monitor outputs with anti-thump technology and two high-headroom instrument inputs that are great for guitars with active pickups. The Scarlett 18i20 is an excellent choice for producers and musicians looking to record drums and live instruments in studio quality.

If you're looking to being recording bands and require a USB audio interface with a generous amount of inputs and outputs, MIDI connectivity and SPDIF digital audio, plus the ability to expand over time, this is the interface for you.

Features We Love:

Eight Inputs

18i20 features eight combination inputs, suitable for use with XLR cables and TRS jacks, meaning you can connect both microphones and line-level instruments without the need for DI boxes. The front panel inputs have also been designed for use with guitars, if you like to use amp sims, these inputs will allow you to plug your guitar or bass straight into the 18i20 and record without the risk of clipping.

Ten Outputs

The ten outputs offer a lot of freedom in the studio, from generating multiple independent headphone mixes, to running effects sends or even sending stems to a mixing desk, 18i20 is a versatile interface that can adapt to your needs. The first four channels also feature anti-thump technology and speaker switching to make refining your mixes an easy and efficient process.


If eight ins and ten outs aren't enough for you, it's easy to add an additional eight ins and outs via an ADAT interface like the Focusrite Scarlett OctoPre Dynamic.


Activate Air to engage the All-analogue Air circuit, which switches the impedance to 2.2kΩ and adds two cumulative high shelves, totalling a 4dB boost in the high frequencies, recreating the sound of the classic Focusrite ISA 110 preamp which was commission by Sir George Martin for his iconic AIR studios. This essentially swaps the sound of your selected channel from the standard ultra-clear sound to an analog channel strip sound that makes drums pop and vocals shine.

Updated Software Bundle!

Each new Scarlett now comes with an expanded selection of software worth over £1000!, including the Focusrite Red Plug-in Suit and Hitmaker Expansion to get you recording professional music straight out of the box. Your new Scarlett comes with the following software:

  • Antares® Auto-Tune® Access
  • Relab LX480 Essentials
  • Softube® Marshall® Silver Jubilee 2555
  • XLN Audio® Addictive Keys
  • XLN Audio® Addictive Drums 2: Studio Rock Kit
  • Brainworx® bx_oberhausen
  • Brainworx® bx_console Focusrite SC
  • Brainworx® bx_masterdesk
  • Three Month Splice Sounds Subscription
  • Focusrite Red 2 & 3 Plug-In Suite
  • Ableton® Live Lite
  • Avid® Pro Tools® | First with Focusrite Creative Pack

Three Year Warranty

To give you peace of mind over your investment, your Focusrite interface is supplied with a Three Year Warranty.


Scarlett 3rd Gen owners each receive a free 3-month subscription to Splice Sounds. This continually expanding library of samples, sounds and loops is regularly tapped into by hit producers and is used all over today's chart music.


  • Excellent starting point to begin recording bands professionally
  • Expandable to 16 tracks in and out
  • Connect your external hardware via MIDI
  • Integrated talkback mic lets you communicate with musicians in another room
  • SPDIF allows for digital transfer of audio
  • Includes software to get you making music straight out of the box
  • Includes access to Plug-in Collective giving you to free software downloads and discounts
  • Covered under the Focusrite 3 Year Warranty


SUPPORTED SAMPLE RATES 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
Frequency Response 20Hz - 20kHz ± 0.1dB
Dynamic Range 111dB (A-weighted)
THD+N <0.0012%
Noise EIN -128dBu (A-weighted)
Maximum Input Level 9dBu (at minimum gain)
Gain Range 56dB
Impedance 3kΩ
Frequency Response 20Hz - 20kHz ± 0.1dB
Dynamic Range 110.5dB (A-weighted)
THD+N <0.002%
Maximum Input Level 22dBu (at minimum gain)
Gain Range 56dB
Impedance 60kΩ
Frequency Response 20Hz - 20kHz ± 0.1dB
Dynamic Range 110dB (A-weighted)
THD+N <0.03%
Maximum Input Level 12.5dBu (at minimum gain)
Gain Range 56dB
Impedance 1.5MΩ
Dynamic Range (Line Outputs) 108dB
THD+N <0.002%
Maximum Output Level (0 dBFS) 15.5dBu
Impedance 430Ω
Dynamic Range 104dB (A-weighted)
THD+N <0.002%
Maximum Output Level 7dBu
Impedance <1Ω

Customer reviews

Overall Rating 4.8/5 (5 reviews)

Toby S. - 30/10/2021

Upgraded from an old line 6 unit and the pre amp quality is like night and day. Routing is great through the focusrite control software

ryan f. - 25/10/2021

Payman M. - 18/8/2021

Although I already own a Focusrite Clarett 8 I found difficulty using multiple inputs into zoom on my mac as Zoom appears not to like Thunderbolt connection but" likes" usb connection. So research indicated that the Scarlett 8 with usb would be ok and it is.

Patrick C. - 18/2/2021

Gerry C. - 28/12/2020

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