Input  | 
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Phantom  | 
Enables the phantom power feature which supplies power to a microphone via the audio cables attached to the device. This feature is used for condenser microphones.  | 
Gain  | 
Sets the amount of amplification or attenuation to be applied to the signal. The valid range is -95dBu to +30dBu.  | 
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 See also Slot x: 4 Channel Line Input (black) Slot x: 4 Channel Line Output (blue)  |