I've connected my studio condenser mic to Duet 2 (USB), but I'm not getting any input. What should I check?

Symptom:

Condenser microphone is connected, but there is no signal on the OLED meters of Duet 2 or in my recording software.

Solution:

Please be sure you've checked the following

1. Verify that the mic is properly connected to Duet's input using an XLR cable.
2. Open Apogee Maestro 2 or Apogee Control 2 (depending on which software you've installed... found in your applications folder), go to the input tab and make sure "Mic" is selected on the channel you've connected your microphone to.
3. Check that you've selected/engaged 48V phantom power for that input channel.