Focusrite Scarlett 18i20 3rd Gen USB Audio Interface Review

The Focusrite Scarlett 18i20 3rd Gen is a powerful and versatile 18-input, 20-output USB audio interface aimed at professional home studios and musicians. This third generation model builds on the success of the popular Scarlett range with improved converters, lower latency, and new Focusrite MixControl software.

In this review, we’ll take an in-depth look at the features, sound quality, software bundle, and overall performance of the 18i20 to see how it stacks up against competitors and if it’s worth the investment for home studio owners and gigging musicians.

Key Features

• 18 inputs and 20 outputs
• 24-bit/192kHz conversion
• 4 newly designed mic preamps with Air mode
• 2 independant headphone outputs
• 8 analog outputs
• 8 line inputs
• 2 instrument inputs
• MIDI I/O
• Monitor mixing and FX software included
• USB-C connectivity

Sound Quality and Conversion

The Scarlett 18i20 3rd Gen utilizes the latest high performanceFocusrite converters to deliver pristine audio quality with 119dB dynamic range on the inputs and 121dB on the outputs. This puts it right up there with some of the best interfaces in its class like the Presonus Quantum and RME Babyface Pro.

The mic preamps have also been redesigned and now feature Air mode which emulates Focusrite’s classic ISA preamp sound. This adds a subtle sheen and warmth to vocals and acoustic instruments, making them sound more professional. The instrument inputs also sound clear and responsive, translating guitar and bass tones accurately.

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For monitoring, the 18i20 provides two independent headphone outputs with separate mix controls so two performers can dial in their own cue mixes. The main outputs feed speakers confidently even when pushing high volumes without any distortion or harshness. Overall, the sound quality lives up to Focusrite’s excellent reputation.

Connectivity and Software

The Scarlett 18i20 utilizes a USB-C connection to hook up to your computer. It’s compatible with USB 3 ports and also works with Thunderbolt 3 computers for plug-and-play connectivity. There are also optical ADAT inputs and outputs for expanding the I/O capabilities by connecting external mic pres or ADAT compatible gear.

Bundled software includes Focusrite Control for routing and low-latency monitoring, and the Focusrite Red Plug-in Suite of effects and amp sims. However, the most exciting inclusion is a Pro Tools | First Focusrite Creative Pack license for getting started with Avid’s industry standard DAW.

Ease of Use

Despite the abundance of inputs and outputs, the 18i20 maintains a clean, logical layout on the rear panel which makes it easy to hook up. The front panel provides instant access to headphone and line input monitoring levels.

The Focusrite Control software provides matrix-style routing between all the inputs and outputs as well as monitor mix controls. It offers full customization for your workflow but may require some learning curve for new users. Fortunately, the 18i20 comes with printed documentation walking you through the basics of setting up your interface.

Who is it for?

With its robust I/O count, great converters, and pedigree mic preamps, the Focusrite Scarlett 18i20 3rd Gen is ideal for home studio owners who need to record drums, guitars, vocals, and other instruments simultaneously. Musicians with bigger rigs and those collaborating with multiple performers will benefit.

While it’s full-featured for professionals, the intuitive software and layout also make this a great step-up model for beginner and intermediate producers ready to upgrade from entry-level interfaces.

Comparison to Other Models

The 18i20 sits above Focusrite’s Scarlett Solo, 2i2, and 8i6 interfaces, offering more I/O and headroom for larger recording sessions. It compares well to competitors like the PreSonus 1824c but adds nicer preamps and ADAT expandability.

The Clarett OctoPre gives you 8 mic pres for a bit less, but no additional line inputs or MIDI. Moving up, the RME Babyface Pro FS provides pristine conversion in a portable interface but fewer physical inputs. Overall, the 18i20 hits a nice sweet spot of value in the crowded prosumer interface market.

Pros

• Excellent sound quality with professional grade converters
• Versatile high headroom mic preamps with Air mode
• Plenty of I/O for complex recording sessions
• Independent headphone mixes for performers
• Bundled software adds value including Pro Tools First
• Rugged metal construction

Cons

• Focusrite Control has some learning curve
• No dedicated power switch
• Small screen for mixer view

Conclusion

With upgraded converters and mic preamps, seamless USB-C connectivity, and well-designed software control, the Focusrite Scarlett 18i20 continues to be one of the best prosumer interfaces available. It provides an exceptional value for home studio owners who need plenty of I/O, great mic pres, and excellent sound. Despite some interface software quirks, the 18i20 gets the fundamentals right and will provide many years of high-quality service.

FAQs

Here are answers to some frequently asked questions about the Focusrite Scarlett 18i20 3rd Gen:

What computer connectivity does it use?

The 18i20 uses USB-C connectivity which is compatible with USB 3 ports or Thunderbolt 3 computers.

How many mics can you record at once?

With 4 mic preamps plus 8 line inputs, you can record up to 12 mono sources simultaneously.

Does it come with any software?

Yes, it includes Focusrite Control software plus Ableton Live Lite and Softube Time & Tone bundle plugins. It also has a Pro Tools First license.

Is Thunderbolt better than USB?

Thunderbolt has lower latency and can transmit more bandwidth. However, for the 18i20 USB provides plenty of speed and stability. Thunderbolt compatibility is convenient if you own a new Mac.

Can you expand the number of inputs?

Yes, using the ADAT optical in and out you can add up to 8 channels of additional I/O from external mic pres or ADAT compatible gear.

Are there any compatible accessories?

Focusrite offers the Red 8Pre expander and the RedNet series for adding more I/O. The 18i20 is also compatible with the Clarett Thunderbolt interfaces.

What are the dimensions?

The 18i20 is 12.6 x 8.58 x 1.73 inches (320 x 218 x 44 mm).

Comparison Table

Feature	Focusrite Scarlett 18i20	PreSonus Studio 1824c	MOTU M4
Price	$599	$599	$219
Mic preamps	4	4	1
Line inputs	8	6	2
Instrument inputs	2	2	1
Max sampling rate	192 kHz	96 kHz	96 kHz
ADAT I/O	Yes	No	No
MIDI I/O	Yes	No	No
Included software	Pro Tools First, Ableton Live Lite	Studio One Artist	MOTU Performer Lite

Conclusion

The Focusrite Scarlett 18i20 3rd Gen interface provides professional quality audio conversion in a feature-packed unit with plenty of I/O for studio recording and live performance. It’s a versatile option for home studio owners who need great mic preamps and flexible routing options to capture high-quality tracks. Musicians with more complex setups will appreciate the abundance of inputs and outputs combined with exceptional sound. Despite a few minor drawbacks, the 18i20 delivers outstanding performance and value for a mid-range interface.

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