How to setup mic preamp in home recording studio or live sound reinforcement

In this video i have explained how to setup a microphone preamplifier in your home recording studio or for live sound reinforcement setup/applications. I have demonstrated the Physical connections. I have also explained the knobs & switches on front & how the bandwidth octave knob works , what is the main purpose of using it & also represented the main functions of it on DAW's GEQ for better understanding of the concept .