Box contents system requirements, Box contents, System requirements – Focusrite Scarlett 18i8 USB-C Audio/MIDI Interface (3rd Generation) User Manual
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A completely new feature on the Third Generation 18i8 is the ALT function, which provides secondary
monitor speaker switching. This lets you connect a second pair of monitor loudspeakers to Line
Outputs 3 and 4 and switch between the pairs to reference your mix on a different set of speakers.
The ALT function is configured and selected from Focusrite Control.
All inputs on the Scarlett 18i8 are routed directly to your DAW software for recording, but Focusrite
Control also allows you to route these signals internally within the device to the outputs so that you
can monitor the audio signals with ultra-low latency - before they arrive at your DAW, should you
need to do so.
The Scarlett 18i8 also has connectors for sending and receiving MIDI data; this lets you use it as a
MIDI interface between your computer’s USB port and other MIDI equipment in your system.
Box Contents
Along with your Scarlett 18i8 you should find:
• External 12 V DC mains Power Supply Unit (PSU)
• USB cable, Type ‘A’ to Type ‘C’
• Getting Started Information (printed on inside of box lid)
• Important Safety Information
System requirements
The easiest way to check that your computer’s operating system (OS) is compatible with the Scarlett
18i8 is to use our online OS Checker at
As new OS
versions become available over time, you can continue to check for further compatibility information
by searching our Help Centr