I'm using a very cheep mic a m1 samson (karaoke mic). The problem is I plug it in and it makes a god awful static sound, my boost is up 20decibles that makes it more apperent but even with the boost off you can hear it. I thinking its the mic but I'm not sure because if I turn the switch to off on the mic it still makes the noise. Someone please help, here is a sample of the noise on soundcloud. Listen to the background sound.