so let me get something straight. preamps in usb interfaces are absolutely worthless? I just bought a new interface thinking that my old interface had dead preamps and the same thing is happening. There is absolutely no gain whatsoever on this thing. no headroom hardly at all. I have to turn the device ALL THE WAY UP to get any kind of workable sound out of my sm57 or pg48. I don't get it. I should have plenty of headroom for the mic to pick up low level signal (ex: talking) but this thing has to be cranked up pretty much all the way to even be heard. totally confused.