I have one of the newer generations units. I'm finding I have to crank the input gain for a dynamic microphone (Shure SM7B) to get it to an an appropriate input level. I'm like at 8+ out of 10 on the knob, which is unusual for me and I'm wondering if others have a similar experience with this unit. I know it's an entry level unit and is this just a factor of that?? Thanks.