Connecting Line-Level Devices; Loopback - Focusrite Scarlett 2i2 Studio 4th Gen User Manual

Connecting Line-Level Devices

The following diagram shows how to connect a line-level device to the line input on the Scarlett
2i2.
Connect line-level devices such as synthesisers, keyboards or mic preamps to either input using a
6.35mm jack input on the front panel.
When you connect a line-level device use a 6.35mm to 6.35mm TRS jack cable but note each
6.35mm input is a mono input. Turn off Inst when you connect line-level devices to the Scarlett
2i2.
1. This shows a stereo synthesiser connected using two 6.35mm TRS jack cables going
from the synthesiser's left and right outputs to the Scarlett 2i2's inputs 1 and 2.
2. This shows two mono sources connected to each input on the Scarlett 2i2. Input 1 has
a microphone preamp connected, the microphone preamp boosts the signal level to
line level, if your microphone preamp has an XLR (M) output you still need to go into
the Scarlett using a 6.35mm TRS jack, for example using an XLR (F) to 6.35mm TRS jack
cable. Input 2 has a mono synthesiser connected using a 6.35mm TRS jack cable.
Scarlett 2i2 4th Gen Studio Pack User Guide

Loopback

With Loopback, you can capture computer audio and record it into your recording software on
separate channels alongside your connected mics or instruments.
To use Loopback select inputs channels 3-4 in your DAW software.
Loopback works by 'looping back' audio outputs from your computer to virtual input channels
within your Scarlett. Any computer audio can be recorded into a DAW (Digital Audio Workstation).
Important
When you're using Loopback, mute the channels in your recording software so you
don't cause a feedback loop.
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