PRE Guide10
Channel Mute Switches and LEDs
Each PRE channel has a dedicated Mute switch
to mute input signal. The respective Mute LED
lights when muting is enabled.
Channel Select Switches and LEDs
These switches are used to “focus” one or more
channels to adjust their controls. When lit
(green), the Channel Select LED indicates that
the channel’s controls can be adjusted.
To select multiple channels for adjusting, first
press the Shift key on the left-hand side of the
unit, then press the Select switches for corre-
sponding channels. To return to single channel
selection, disengage the Shift key, then press the
Select switch for the individual channel you
wish to change.
The following channel controls can be adjusted:
• 48V Phantom Power; see “48V Switch and
LEDs” on page 9.
• Phase Reverse; see “Phase Switch and
LEDs” on page 9.
• Pad; see “Pad Switch and LEDs” on page 9.
• Insert; see “Insert Switch and LEDs” on
page 9.
• High-Pass Filter; see “High-Pass Filter
Switch and LEDs” on page 9.
• Mic/Line/Instrument Source Switching; see
“Source Switch and LEDs” on page 8.
• Input Gain; see “Gain/Param and Input
Gain” on page 15.
When PRE is powered off, channel select states
are stored in memory and are subsequently re-
stored at power up.
Line/Inst 1 and 2
The front panel includes two 1/4-inch
balanced/unbalanced TRS jacks, with Tip wired
hot (or “+”), Ring cold (“–”), and Sleeve ground.
These jacks mirror Line/Inst Inputs 1 and 2 on
the back panel. Connecting to the front panel
Line/Inst input will break a connection made to
the respective back panel Line/Inst input.
Use these jacks for convenient access to high im-
pedance instrument inputs.
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