Focusrite Scarlett 18i20 Gen 4 USB Audio Interface
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 Heart of Your Studio: Built to Capture Everything
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.
High-Performance Preamps and Inputs
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.
Expanded I/O for Complex Setups
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.
Enhanced Monitoring and Workflow Tools
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.
Control Software & Mobile App Integration
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.
Included Software Update
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.
Focusrite Scarlett 18i20 Gen 4 USB Audio Interface Features:
Pro-grade converters taken directly from Focusrite’s RedNet range
Eight 4th Gen mic preamps with 69 dB of gain
16-channels of ADAT I/O
Multi-channel Auto Gain
Auto Gain and Clip Safe modes take care of levels
Monitor groups to easily manage multi-speaker setups, including 2.1 and 5.1 surround
Easily manage complex routing via Focusrite Control 2 software
ADAT, SPDIF, MIDI, and Word Clock capabilities
Clean, ultra-low distortion playback
Superior clarity with 120dB of dynamic range
Re-engineered Air mode replicates the sound of driving a classic studio console
Built-in talkback mic & A/B speaker switching
iOS and Android Focusrite Control 2 apps can adjust monitor mixes and mic pre-gains without having to return to the computer
Focusrite Scarlett 18i20 Gen 4 USB Audio Interface Specifications
Item #:
FOC SCAR18I20V4
Manufacturer Part Number:
AMS-SCARLETT-18I20-4
UPC:
815301001522
Product Specifications
Focusrite Scarlett 18i20 Gen 4 USB Audio Interface Specifications
Number of Microphone Preamps: 8
Phantom Power: Yes (Independent)
Instrument Inputs: 2
Line Inputs: 8
Air Mode: Yes
Auto Gain: Yes
Clip Safe: Yes
Line Outputs: 10
Headphone Outputs: 2
ADAT Inputs: 2 (16 channels at 44.1/48 kHz and up to 8 channels at 96 kHz)
ADAT Outputs: 2 (16 channels at 44.1/48 kHz and up to 8 channels at 96 kHz)
SPDIF Input: 2
SPDIF Output: 2
Loopback: Yes
Connectivity: USB Type-C
Protocol: USB 2.0
Form Factor: Desktop
Simultaneous I/O: 20 x 24 (including Loopback)
A/D Resolution: 24-bit/192 kHz
Bus Powered: No
Software Compatibility: Scarlett 18i20 is class compliant so will work with Mac, Windows PC, Chromebook, USB-C iPad, and iPhone.
Power Requirements: 100-240V, 50/60 Hz 30W (IEC Cable included)
Focusrite Scarlett 18i20 Gen 4 USB Audio Interface Specifications
Product Specifications
Focusrite Scarlett 18i20 Gen 4 USB Audio Interface Specifications
Number of Microphone Preamps: 8
Phantom Power: Yes (Independent)
Instrument Inputs: 2
Line Inputs: 8
Air Mode: Yes
Auto Gain: Yes
Clip Safe: Yes
Line Outputs: 10
Headphone Outputs: 2
ADAT Inputs: 2 (16 channels at 44.1/48 kHz and up to 8 channels at 96 kHz)
ADAT Outputs: 2 (16 channels at 44.1/48 kHz and up to 8 channels at 96 kHz)
SPDIF Input: 2
SPDIF Output: 2
Loopback: Yes
Connectivity: USB Type-C
Protocol: USB 2.0
Form Factor: Desktop
Simultaneous I/O: 20 x 24 (including Loopback)
A/D Resolution: 24-bit/192 kHz
Bus Powered: No
Software Compatibility: Scarlett 18i20 is class compliant so will work with Mac, Windows PC, Chromebook, USB-C iPad, and iPhone.
Power Requirements: 100-240V, 50/60 Hz 30W (IEC Cable included)
Customer Reviews
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kevin k. 🇺🇸
Verified Buyer
Love this item. It’s the
Love this item. It’s the newest member of my studio m, awesome!!
Published date
01/15/25
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Wesley G. 🇺🇸
Verified Buyer
Great interface and incredibly easy
Great interface and incredibly easy to use! Decent price too.
Published date
01/26/25
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Brianna C. 🇺🇸
Verified Buyer
I love my new intereface
I love my new intereface it's high quality and does not give me any issues. Definitely top of the line! Makes your sound come to life!
Published date
10/05/25
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Chris F. 🇺🇸
Verified Buyer
I love there products. I've
I love there products. I've been super interested and using these things for years now. Its awesome im getting to add another to my arsenal. Great products
Published date
09/15/25
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Questions & Answers
1 answered questions
Vern P.
Verified User
Q: Is this beautiful device rack mountable?
Answers on Content by By AMS Customer Service on Sun Nov 30 2025
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