Owner's Manual

7
10. MONITOR – main monitor output level control: this will normally control the level at the main
monitor outputs on the rear panel, but can be configured in Focusrite Control to adjust the
level at any of the unit’s ten analogue outputs.
11. DIM and MUTE – two switches controlling the 18i20’s monitor outputs; DIM reduces the
output levels by 18 dB, while MUTE turns the outputs off. By default, these switches affect
the main monitor outputs 1 and 2, but may be configured in Focusrite Control to act on any
of the analogue outputs. The switches each have an associated LED (DIM: yellow, MUTE: red)
indicating that the function is selected.
12. Headphone volume 1 and 2 – connect one or two pairs of stereo headphones at the two
¼” (6.25 mm) TRS jack sockets below the controls. The headphone outputs always carry
the signals that are currently routed to analogue outputs 7/8 and 9/10 (as stereo pairs) in
Focusrite Control.
13. POWER – AC power switch and LED.
14. Rack ears for mounting the Scarlett 18i20 in a standard 19” equipment rack.