Armistice,
I am trying to record a spoken word, interview type program to be used as a podcast.
I ran the mic into the channel one 1/4" jack. I ran the board into my mac input jack with a dual 1/4" to single 1/8"(3.5mm?) cable. I did about 30 minutes of recording just constantly talking into my kit changing the levels one at a time, two at a time, etc. For the most part I kept the levels in garage band at 0 dB.
When I have the channel one level "centered" the main mix "centered" and the channel one gain "centered" there is no discernible noise, but the volume was too low. So by turning up the volume on the recording I start to get background noise.