The Scarlett 4i4 hardware interface provides the means for connecting microphones, musical
instruments or line level audio signals to a computer running Mac OS or Windows. The signals at the
physical inputs can be routed to your audio recording software / digital audio workstation (referred
to throughout this User Guide as the “DAW”) at up to 24-bit, 192 kHz resolution; similarly, the DAW’s
monitor or recorded output will appear at the unit’s physical outputs.
Audio sources – mics, instruments, etc. - connected to the physical inputs can be recorded in
the DAW and then routed from your DAW to the physical outputs. The 4i4 is equipped with four
audio output channels, which can be connected to an amplifier and speakers, powered monitors,
headphones, DJ or other type of analogue mixer, or any other analogue audio equipment that you
wish to use. Although all inputs and outputs on the Scarlett 4i4 are routed directly to and from
your DAW for recording and playback, you can configure the routing within the 4i4’s accompanying
Focusrite Control application in order to meet your needs. The 4i4 also acts as a convenient MIDI
interface between your computer and other MIDI equipment.
For DJs, the four analogue outputs make it possible to have a stereo master output and a headphone
cue channel when mixing internally on a laptop; alternatively you have two separate stereo outputs
at your disposal for connection to an analogue DJ mixer.