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The Focusrite Scarlett 18i20 is the industry-leading USB audio interface. Featuring 8 XLR inputs, 4th Gen preamps, pro-grade converters, built-in talkback mic, & gain level automation
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The Focusrite Scarlett 18i20 4th Gen is a top-tier USB audio interface designed for musicians and producers looking to take their recording to the next level. It features professional-grade converters derived directly from Focusrite’s flagship RedNet range, delivering pristine 24-bit/192kHz audio with a massive 120dB dynamic range which is ideal for capturing everything from subtle whispers to powerful performances.

Eight 4th Gen mic preamps offer a stunning 69dB of gain, enabling clean recordings from even the quietest sources. Two Hi-Z instrument inputs and 8 line inputs provide ample flexibility for connecting guitars, synths, and outboard gear. Re-engineered Air mode adds harmonic richness and presence to vocals and acoustic instruments, simulating the character of a classic studio console. The Auto Gain feature intelligently sets input levels in seconds, perfect for quickly configuring sessions. Clip Safe actively monitors levels up to 96,000 times per second to prevent clipping, preserving audio integrity in high-pressure environments.
A total of 18 inputs and 20 outputs, including analog, ADAT, SPDIF, MIDI, and Word Clock, make the 18i20 a versatile hub for any studio setup. 16 channels of ADAT I/O at 44.1/48kHz allow users to expand to 24 inputs and 28 outputs, making it perfect for live sessions and large tracking projects. Robust analog outputs include A/B speaker switching and custom-designed headphone amps capable of driving high-impedance headphones.


The 18i20 includes a built-in talkback mic, LED bar metering assignable to inputs/outputs, and master output meters to streamline session management. Monitor group support, which is now available across Scarlett 16i16, 18i16, and 18i20 4th Gen models, enables easy setup of 2.1, 5.1, or other multi-speaker configurations.
Focusrite’s Control 2 software handles routing, level adjustments, monitor mixes, and more — with an intuitive desktop interface. Compatible iOS and Android apps allow performers and engineers to remotely adjust mic preamp gains and monitor mixes. Multi-channel Auto Gain is also available on mobile, keeping engineers focused on monitoring the performance without constant trips to the computer.

Pro Tools Intro+ for Focusrite is replacing the current 3-month trial of Pro Tools Artist included with Scarlett 3rd Gen, 4th Gen, and Clarett+ audio interfaces. Unlike the trial, Pro Tools Intro+ for Focusrite is a perpetual license which does not expire.
Avid has enhanced the existing Pro Tools Intro by bundling it with effects, instruments, and sounds available only in this iteration of Pro Tools Intro, hence the name Pro Tools Intro+ for Focusrite. This bundle is available to all Scarlett 3rd Gen, 4th Gen, and Clarett+ owners without any purchase date restrictions.
CALIFORNIA PROPOSITION 65 WARNING
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
Focusrite Scarlett 18i20 Gen 4 USB Audio Interface Specifications
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