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HARDWARE FEATURES
Front Panel
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1. Inputs 1 & 2 – "Combo" input sockets - connect microphones, instruments (e.g., guitar), or
line level signals here. Combo sockets accept both XLR and ¼" (6.35 mm) jacks. Microphones
connect using XLR plugs: instruments and line level signals should be connected via ¼" (6.35
mm) jack plugs of either TS or TRS type. The preamp gain is appropriate for microphones
when an XLR plug is inserted, and for higher level signals when a jack plug is inserted. Do not
connect anything other than a microphone - e.g., the output of a sound module or FX unit - via
an XLR plug, as the signal level will overload the preamp, resulting in distortion; , if phantom
power is enabled, you may damage your equipment.
2. GAIN 1 and GAIN 2 – adjusts the preamp gain for signals on inputs 1 and 2 respectively. The
gain controls have tri-colour LED 'rings' to confirm signal level: green indicates an input level
of at least -24 dBFS (i.e., 'signal present'), the ring turns amber at -6 dBFS to indicate the
signal is close to clipping, and finally to red at 0 dBFS (digital clipping).
3. 48V – phantom power switch for mic inputs - enables 48 V phantom power at XLR contacts of
both Combo connectors.
4. INST – Line/Instrument level switches for each input which alter gain and input impedance to
suit either instrument or line level signals. 'INST' illuminates red when Instrument mode is
selected. You can also enable INST from Focusrite Control.
5. AIR – two switches enabling AIR mode for each input. AIR modifies the frequency response of
the input stage to model the classic, transformer-based Focusrite ISA microphone preamps.
'AIR' illuminates yellow when the mode is selected. Note that AIR may also be selected from
Focusrite Control.
6. MONITOR – main monitor output level control - sets the output level at the main (rear panel)
outputs LEFT and RIGHT.
7.
USB LED – a green LED illuminates when the Scarlett is connected and recognised by
your computer.
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