Purchased a Used AudioBox And Presounus M7 Mic yesterday. When recording audio there is a constant white noise / hiss in the background. How can i elimnate this? could it possibly be a problem with the mic, or the audio box itself? also, i can not hear myself in live playback when i use the mic, how do i fix this? *Im using Studio One but i have Audobe Audition 3, and Cubase.