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Focusrite

Scarlett 18i20 4th Gen

Strong 8-preamp interface with great conversion, expandable I/O, and auto-gain, ideal for project studios despite higher cost.

Summed up from 7 published reviews

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Focusrite Scarlett 18i20 4th Gen

What reviewers like

  • Excellent mic preamps with 69 dB gain 1234
  • Auto Gain and Clip Safe simplify setup 1234
  • Flexible I/O expandable to 18 in/20 out via ADAT 1234
  • High-quality conversion up to 122 dB dynamic range 1345
  • Focusrite Control 2 app enables remote routing 1235

What they don't

  • Higher price than Gen 3 at launch 167
  • Large, heavy, mains-powered; not portable 2357
  • Basic monitor control lacks mono button, DSP 37
  • ADAT limited to eight channels at 96 kHz 12

Best for

Multi-mic recording, drum tracking, and expanding home studios

Skip it if

Need portable bus-powered interface or simple stereo recording

Where it fits

use
PodcastsMusic
kind
Interface
inputs
5 or more
must-haves
Phantom power60 dB+ gainGuitar inputUSB-C

Specs

Mic inputs
8
Type
Audio interface
Best for
Podcasts, Music
Max gain
69 dB
Phantom power
Yes
Guitar input
Yes
Loopback
No
Built-in effects
No
USB-C
Yes
MIDI
Yes

Also worth a look

Questions

Is the Focusrite Scarlett 18i20 4th Gen worth it?

Strong 8-preamp interface with great conversion, expandable I/O, and auto-gain, ideal for project studios despite higher cost.

What do reviewers like about the Focusrite Scarlett 18i20 4th Gen?

Excellent mic preamps with 69 dB gain. Auto Gain and Clip Safe simplify setup. Flexible I/O expandable to 18 in/20 out via ADAT. High-quality conversion up to 122 dB dynamic range. Focusrite Control 2 app enables remote routing.

What are the downsides of the Focusrite Scarlett 18i20 4th Gen?

Higher price than Gen 3 at launch. Large, heavy, mains-powered; not portable. Basic monitor control lacks mono button, DSP. ADAT limited to eight channels at 96 kHz.

Who should buy the Focusrite Scarlett 18i20 4th Gen?

Multi-mic recording, drum tracking, and expanding home studios. Skip it if need portable bus-powered interface or simple stereo recording.

Sources

We don't test products ourselves. This page sums up 7 published reviews, read on October 24, 2026; each point above links to the reviews that make it.

  1. musictech.com Focusrite Scarlett 18i20 4th Gen review | MusicTech
  2. musicradar.com “Even a complete beginner could get the 18i20 set up and start making multi-mic recordings”: Focusrite Scarlett 18i20 4th Gen review | Music
  3. soundonsound.com Focusrite Scarlett 18i20 4th Gen
  4. recordingmag.com Focusrite Scarlett 18i20 4th Gen
  5. performermag.com REVIEW: Focusrite Scarlett 18i20 4th Gen Audio Interface | Performer Mag
  6. kvraudio.com Focusrite Scarlett 18i20 4th Gen Review
  7. sonicscoop.com Gear Review: Focusrite Scarlett 18i20 and 4th Gen Interfaces