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Focusrite Scarlett 18i20 4th Gen USB Audio Interface, for Multitrack Recording, Music Production and Podcasting — High-Fidelity, Studio Quality Recording, and All the Software You Need to Record

  • Based on 103 reviews
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Availability: In Stock.
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Arrives Saturday, May 16
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Style: Scarlett 18i20


Configuration: 4th Gen


Features

  • The engineers interface: Scarlett 18i20 features 18 inputs and 20 outputs, including eight mic preamps, Hi-Z, line inputs, ADAT, S/PDIF, MIDI I/O, and Word Clock
  • Capture everything: The 4th Generation preamps provide 69dB of gain, with two Hi-Z inputs and eight line inputs for versatile connectivity
  • Audio quality beyond its class: Equipped with 24-bit, 192kHz converters from our flapship RedNet range, offering a 122dB dynamic range for detailed recordings
  • Big-studio sound: Air modes add presence and harmonic drive to your sound, replicating the character of classic studio consoles for vocals and instruments
  • Professional workflow tools: Auto Gain sets optimal levels quickly, while Clip Safe prevents clipping by monitoring and adjusting gain in real-time
  • Everything in the box: Includes Pro Tools Intro+, Ableton Live Lite, Cubase LE, and Hitmaker Expansion: a suite of essential effects, powerful software instruments, and easy-to-use mastering tools.

Description

Scarlett 18i20 is the industry-leading USB audio interface for project studios, with pro-grade converters taken directly from Focusrite’s flagship RedNet range. It’s ideal for tracking; the eight 4th Gen mic preamps have an impressive 69dB of gain, capable of capturing the most dynamic performances, with Auto Gain and Clip Safe modes taking care of levels so you can focus on the take. Scarlett 18i20 is also the perfect hub to integrate your DAW and hardware with more than enough analogue and digital I/O to connect a huge number of external instruments, processors, and effects, and manage complex routing with incredible ease via Focusrite Control 2 software.

Brand: Focusrite


Compatible Devices: Microphone, Instrument, Personal Computer, Headphones, Studio Monitors


Supported Software: All audio recording software


Connectivity Technology: USB


Number of Channels: 18


Compatible Devices: Microphone, Instrument, Personal Computer, Headphones, Studio Monitors


Supported Software: All audio recording software


Connectivity Technology: USB


Number of Channels: 18


Frequency Response: 35 KHz


Operating System: Mac OS, Windows OS, iOS


Audio Input: USB


Maximum Sample Rate: 192 KHz


Item Dimensions D x W x H: 17.37"D x 10.21"W x 1.83"H


Item Weight: 8 Pounds


Brand Name: Focusrite


Manufacturer: Focusrite


UPC: 815301001522


Global Trade Identification Number: 22


Manufacturer Part Number:


Model Number: AMS-SCARLETT-18I20-4G


Warranty Description: 3 year manufacturer.


Included Components: Scarlett 18i20 4th Gen, IEC Cable, USB Cable


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Money well spent
Style: Scarlett 18i16 Configuration: 4th Gen
Definitely a good purchase. Money well spent and easy to utilize. Durable, awesome quality and very versatile
Reviewed in the United States on March 15, 2026 by Tino

  • works, hooked to mic, keyboard, WiiM Pro, Mac Mini = all work
Style: Scarlett 16i16 Configuration: 4th Gen
Extremely great! I am using it with Mac mini and a Roland keyboard as well as a Shure mic. All connect and work flawlessly. Also have it plugged into a WiiM Pro that allows me to listen to wireless music from my iPhone & iPad through my studio speakers. This thing rocks! works flawlessly with Logic, Roland Keyboard both MIDI and sound from keyboard, mini computer. No complaints, only =) ... show more
Reviewed in the United States on December 4, 2025 by 78 Muses

  • Better than the Apollo?
Style: Scarlett 16i16 Configuration: 4th Gen
I love this freaking thing dude, has overall given many more paths to explore creatively just by simply having more inputs and outs, instantly noticed a difference in productivity, the upgraded appearance is a plus as well, coming from a gen 3 2i2, I was looking for something to improve functionality and allow me to expand my studio, this has done just that, I would recommend this over an Apollo any day, UAD software can be buggy when dealing with multiple systems, focusrite control is very intuitive and easy to use across the board, not to mention artists vocals sound crisp and clear, smooth harmonic drivers sound beautiful when mixed and gain staged correctly. Overall I’d say this product is worth every single penny and more ... show more
Reviewed in the United States on August 3, 2025 by Evan

  • Reliable product
Style: Scarlett 18i20 Configuration: 4th Gen
Focusrite control 2 is confusing compared to the first version. Trying to loop back audio for OBS to stream internal sound still required an audio driver. The main reason I bought this product. Still a good upgrade from 2nd gen
Reviewed in the United States on January 6, 2026 by Deshawn Findley

  • Everything works as it should
Style: Scarlett 18i20 Configuration: 4th Gen
For the price point, it interacts with my DAW fruity loops very well. Very clear sound does what it’s supposed to all in all feels pretty damn good to have it.
Reviewed in the United States on February 4, 2026 by Justin Antonsen

  • Excellent quality multi-input sound card
Style: Scarlett 16i16 Configuration: 4th Gen
I bought this to use as a multi-input sound card for Windows 10. It works very nicely and the sound quality is great. An important note is that you may need to enable the extra inputs through the desktop app. After installation, Windows only showed two inputs. After some research I found there is a way by right-clicking in the tray icon and enabling more sources. Otherwise it really works nicely, is built very well, and allows for multitrack recording without much hassle. ... show more
Reviewed in the United States on April 26, 2026 by J. Preece

  • Poor customer service/Product defective
Style: Scarlett 16i16 Configuration: 4th Gen
I purchased this product on sale from Amazon for $339.99. The on and off switch did not work. I contacted Focusrite support but they did not contact me back. Amazon did not offer a replacement but only a return. I returned it and was going to buy a replacement but the price is now $399.99. I spoke with a customer service rep at Amazon and she confirmed only a refund, not an exchange. BAIT AND SWITCH. ... show more
Reviewed in the United States on February 25, 2026 by leslie nagby

  • A good product
Style: Scarlett 16i16 Configuration: 4th Gen
It arrived quite fast and in good condition
Reviewed in the United States on March 3, 2026 by Mohamed Hilmy

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