Focusrite 18i8 G3

Scarlett 18i8 [3rd Gen]

18-in, 8-out USB audio interface

Description
High channel count. Small footprint. Whatever you’re recording, wherever you are, take your whole studio with you. 18i8 is studio sound for the whole band.

The four 3rd Generation Scarlett mic preamps sound great straight out of the box. Air mode recreates the legendary effect of Focusrite's ISA mic pres and makes vocals and guitars shine. The high-impedance, high-headroom instrument inputs are great for recording guitar or bass without clipping, while our iconic Gain Halos make it easy to set input levels fast. Four balanced outputs with Anti Thump speaker switching are hum-free for pristine monitoring and are ideal as FX sends. Two powerful headphone outputs with individual level controls let you monitor, mix and master however you want. Loopback makes streaming and sampling simple. And it comes with some of the best-loved tools in the business, including Ableton Live Lite, Avid Pro Tools Artist and Hitmaker Expansion – with plugins from legendary Auto-Tune® creators Antares®, Brainworx®, Softube®, Landr, XLN Audio®, Relab and more.

Eight inputs and four outputs; four 3rd Generation mic pres, two Hi-Z instrument inputs, four fixed line inputs, and four balanced outputs plus ADAT input for up to eight more channels.
Air Mode breathes life into vocals and acoustic instruments.
24-bit/192 kHz converters deliver studio-quality sound.
Gain Halos make setting levels simple.
Two powerful headphone outputs with independent level controls.
Focusrite Control makes it easy to route audio and create the perfect monitor mix.
Loopback makes streaming and sampling simple.
Flexible connectivity, with MIDI and S/PDIF.
USB-C connectivity, compatible with MacOS and Windows.
Includes Ableton Live Lite, three months of Pro Tools Artist, and the Hitmaker Expansion, with plugins from Antares, Softube, Landr, XLN Audio and more.
Three-year warranty and award-winning customer support for life.

Hi-res 24-bit/192kHz converters give recordings stunning clarity. High dynamic range and ultra-low noise makes sure Scarlett sounds just like you.
Work faster, not harder
Work faster, not harder
Mac, PC or iPadOS. Super-low latency means better takes. Better takes mean better recordings. Scarlett keeps you on track.
You've never sounded so good
Feel it in the air
Air has been breathing life into records for over thirty years. Add high-end detail to vocals and acoustic instruments. Get the sound of the iconic Focusrite Studio Console instantly.
'Better quality, improved specs and not much of a shift in price. It’s difficult to see Focusrite losing that ‘best selling interface’ label any time soon.'

Music Tech logo
'Unreal sound, zero latency, super-cool software and an elegant look... No matter how complete your home studio or live rig is, it probably has a place for this.'

Level up
Gain halos make setting levels simple. Find the sweet spot immediately and get great sound every time.
Ready when you are
Scarlett won’t let you down. Our premium build quality, rock-solid drivers and our award-winning support team make sure of it.
You've heard it a million times
More people use Scarlett than any other interface in the world. We’re a four million strong community including some of the biggest names in music history. We’ve officially gone platinum.
Hitmaker Expansion
Create studio-quality vocals, powerful guitars, dramatic synths, and huge drums, then mix and master with iconic Focusrite studio hardware — all in the box. Every new Focusrite Scarlett, Clarett+, and Red interface comes with an unbeatable range of tried-and-tested studio tools from some of the biggest names in the business.

Whether you’re a guitarist, singer-songwriter, beatmaker, or aspiring producer, Hitmaker Expansion has been compiled to get you release-ready results from your very first session. These are all the plugins you’ll need to write, record, mix and master your music with big studio sound.

Hitmaker Expansion features exclusive content from legendary Auto-Tune® creators Antares®, along with Native Instruments®, Brainworx®, Softube®, Landr, XLN Audio®, Relab and more.
Discover Hitmaker Expansion
All the tools you need to start recording right, now
There’s no better way to step into studio recording – your Scarlett interface comes with some of the best loved tools in the business, including:

Hitmaker Expansion: features exclusive content from legendary Auto-Tune® creators Antares®, along with Native Instruments®, Brainworx®, Softube®, Landr, XLN Audio®, Relab and more.

Three-month’s Avid® Pro Tools Artist subscription and Avid Complete Plugin Bundle: Record and release tracks with the industry-standard DAW and plugin collection. After three-months get an annual subscription with 25% off Pro Tools Artist or 33% off Pro Tools Studio.

Ableton® Live Lite™: the iconic DAW gives you everything you need to get started including instruments, effects and Live’s trademark clip and scene launching for taking ideas further or performance.

Three Month Splice Sounds Subscription: spark inspiration instantly with Splice’s huge Sounds library. With 100 credits per month added to your account, you can grab samples of thousands of artists and millions of sounds.

Person playing guitar

Specifications in detail
Overview
Connectivity
USB type-C
Protocol
USB 2.0
Form factor
Rack mount (1U)
Simultaneous I/O
18 x 8
A/D resolution
24-bit/192 kHz
Number of preamps 4
Phantom power Yes
Number of pads 2
Instrument inputs 2
Line inputs 8
Analogue outputs 4
Headphone outputs 2
Main/alt speaker switching
Yes (via software)
Digital inputs
S/PDIF and ADAT
Digital outputs
S/PDIF
Loopback Yes
MIDI I/O Yes
Bus powered No
Included PSU Yes
Supported sample rates
44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
Microphone inputs
Frequency response 20Hz - 20kHz ± 0.1dB
Dynamic range 111dB (A-weighted)
THD+N <0.0012%
Noise EIN -128dBu (A-weighted)
Maximum input level
9dBu (at minimum gain)
Gain range 56dB
Impedance 3kΩ
Variable line inputs 1-4
Frequency response 20Hz - 20kHz ± 0.1dB
Dynamic range 110.5dB (A-weighted)
THD+N <0.002%
Maximum input level 22dBu (at minimum gain)
Gain range 56dB
Impedance 60kΩ
Fixed line inputs 5-8
Frequency response 20Hz - 20kHz ± 0.1dB
Dynamic range 110.5dB (A-weighted)
THD+N <0.002%
Maximum input level 18dBu
Impedance 44kΩ
Instrument inputs
Frequency response 20Hz - 20kHz ± 0.1dB
Dynamic range 110dB (A-weighted)
THD+N <0.03%
Maximum input level 12.5dBu (at minimum gain)
Gain range 56dB
Impedance 1.5MΩ
Line/monitor outputs

Dynamic range (line outputs)
108dB THD+N <0.002%
Maximum output level (0 dBFS) 15.5dBu
Impedance 430Ω
Headphone outputs
Dynamic range 104dB (A-weighted)
THD+N <0.002%
Maximum output level 7dBu
Impedance <1Ω