Focusrite Scarlett 18i20 4th Gen USB Audio Interface vs Kellards Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface
Updated August 2026 — Focusrite Scarlett 18i20 4th Gen USB Audio Interface wins on i/o options and build quality, Kellards Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface wins on price and portability.
The Focusrite Scarlett 18i20 excels in professional features and audio quality, while the Scarlett 4i4 offers portability and affordability. Choose based on your specific needs.
Why Focusrite Scarlett 18i20 4th Gen USB Audio Interface is better
Audio Quality
Scarlett 18i20 has a dynamic range of 122dB.
I/O Options
Scarlett 18i20 features 18 inputs and 20 outputs.
Professional Tools
Scarlett 18i20 includes advanced workflow tools.
Why Kellards Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface is better
Price
Scarlett 4i4 is $430 cheaper.
Portability
Scarlett 4i4 is compact and easy to transport.
User-Friendly
Scarlett 4i4 is designed for beginners.
Overall score
Specifications
| Spec | Focusrite Scarlett 18i20 4th Gen USB Audio Interface | Kellards Focusrite Scarlett 4i4 USB-C Audio/MIDI Interface |
|---|---|---|
| Inputs | 18 | 4 |
| Outputs | 20 | 4 |
| Dynamic Range | 122dB | 120dB |
| Preamp Count | 8 | 2 |
| Software Bundle | Pro Tools Intro+, Ableton Live Lite, Cubase LE | Pro Tools Artist, Hitmaker Expansion |
Dimension comparison
Overview of the Focusrite Scarlett 18i20 and Scarlett 4i4
The Focusrite Scarlett 18i20 is designed for professional multitrack recording, while the Scarlett 4i4 is a compact audio/MIDI interface suitable for musicians on the go. The Scarlett 18i20, priced at $749.99, offers extensive I/O options, making it ideal for larger setups, whereas the Scarlett 4i4 is priced at $319.99, making it about 57% cheaper and a great choice for smaller projects or home studios.
The Scarlett 18i20 features 18 inputs and 20 outputs, including eight mic preamps, which cater to complex recording scenarios. In contrast, the Scarlett 4i4 provides a more portable solution with four inputs and outputs, making it easier for musicians to record anywhere. This fundamental difference in target users shapes the overall experience of each product.
Connectivity Options
The Scarlett 18i20 boasts a wide range of connectivity options, including eight mic preamps, Hi-Z inputs, ADAT, S/PDIF, and MIDI I/O, which allows for versatile audio routing. This extensive connectivity is perfect for users looking to integrate multiple instruments and recording devices into their setup. The presence of 18 inputs also means that larger ensembles and bands can be recorded simultaneously without any issues.
On the other hand, the Scarlett 4i4 offers two mic preamps, two Hi-Z instrument inputs, and four line inputs. While it has fewer connectivity options, it still provides essential functionalities like MIDI I/O, making it suitable for musicians who need a compact solution for their recording needs. The trade-off here is clear: the Scarlett 18i20 is tailored for extensive use, while the Scarlett 4i4 serves those needing a lighter, more mobile interface.
Audio Quality
Audio quality is paramount in any audio interface, and both models deliver impressive results. The Scarlett 18i20 uses 24-bit, 192 kHz converters from Focusrite’s flagship RedNet range, providing a dynamic range of 122dB. This high-quality audio performance is ideal for professional studios and serious musicians who demand the best sound fidelity.
Conversely, the Scarlett 4i4 also features high-quality converters, achieving a slightly lower dynamic range of 120dB. While this still delivers studio-quality sound, it may not quite match the superior auditory experience offered by the Scarlett 18i20. However, for most users, the difference in audio quality may not be significantly noticeable, especially in casual recording situations.
User-Friendliness and Workflow
The Scarlett 18i20 is equipped with professional workflow tools like Auto Gain and Clip Safe, which can adjust levels in real-time to prevent clipping. This feature allows users to concentrate on their recording without worrying about technical adjustments. The interface also comes with a suite of software including Pro Tools Intro+, Ableton Live Lite, Cubase LE, and Hitmaker Expansion, which supports a comprehensive recording experience.
The Scarlett 4i4 offers similar user-friendly features such as Auto Gain and Clip Safe, ensuring that users can capture their music without technical interruptions. Additionally, it includes a complete recording toolkit that features Pro Tools Artist and various plugins, making it an all-in-one solution for beginners and experienced users alike. Overall, both interfaces aim to simplify the recording process, but the Scarlett 18i20 provides deeper control for more complex setups.
Portability
Portability is a significant factor for many musicians, and here the Scarlett 4i4 shines. Its compact design makes it easy to transport, ideal for musicians who record in various locations such as home studios, practice spaces, or live settings. The ability to work in standalone mode without a computer is another advantage for live performances or monitoring-only situations.
In contrast, while the Scarlett 18i20 offers great functionality, it is less portable due to its larger size and extensive I/O options. This interface is better suited for studio environments rather than travel. Thus, if portability is a key consideration, the Scarlett 4i4 is the clear winner.
Price Point
The price difference between the two interfaces is substantial, with the Scarlett 18i20 retailing at $749.99 and the Scarlett 4i4 at $319.99. This makes the Scarlett 4i4 about $430 cheaper, or roughly 57% more affordable. For budget-conscious musicians or those just starting, the Scarlett 4i4 provides excellent value without sacrificing essential features.
However, for professional users who need the extensive capabilities of the Scarlett 18i20, the investment may be justified. The pricing reflects the different target audiences—serious musicians and producers may find the higher cost of the Scarlett 18i20 worth the added functionality.
Customer Feedback and Sales Rank
The Scarlett 18i20 has a sales rank of 2965, indicating a healthy demand among users who require its advanced features for professional applications. Customers often praise its sound quality, extensive I/O capabilities, and integration with various software platforms.
In contrast, the Scarlett 4i4 has a sales rank of 11822, which reflects its position within the competitive market of audio interfaces. Users appreciate its portability and ease of use, making it popular among beginners and casual musicians. While both products have their strengths, customer feedback highlights the Scarlett 18i20 as a preferred choice for serious projects.
Which should you buy?
Choosing between the Focusrite Scarlett 18i20 and the Scarlett 4i4 ultimately depends on your specific needs. If you require an extensive audio interface for professional-grade recording with high-quality sound and advanced features, the Scarlett 18i20 is worth the investment at $749.99. On the other hand, if you are looking for a more affordable, portable solution that still delivers excellent sound quality for simpler recording tasks, the Scarlett 4i4 at $319.99 is an outstanding choice. Consider your recording environment, budget, and specific requirements to make the best decision for your audio needs.

