Here i am using my AKG c414 for vocals and my AKG c451 on guitar, I'm testing everything to make sure the levels are right, to see if my acoustic needs a bit of compression. I've plugged my c414 into my fat funker compressor/EQ  and my c451 straight into my audio interface with the polarity flipped so the two mics don't cancel each other out

in this pic i am working on the downloaded multi-tracks, adding some compression to spice up the vocals and a bit of eq to control some of the peaky frequencies.