Midas PRO1 Owner's Manual page 273

Mic amp input gain (preliminary input processing)
Mic amp input gain on the control surface and GUI
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PRO1 Live Audio System
Operator Manual
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DL251
Control Function
48V switch (stage Connects 48 volts of phantom power to the XLR mic
box only) input channel connector. Suitable for a condenser
microphone or DI box.
TALK switch Connects talk mic and/or tone and noise generators
to the input channel.
Gain swap button See "Using gain swap" on page 257.
SLOPE switch Selects the value of the high pass filter. Where,
(digital trim only) switch on (illuminated) = 24dB slope and switch off
(extinguished) = 12dB slope.
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DL351 DL431
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DL451