Umm not sure what to say there I adjusted all my setting for 1/2 an hour trying to get this really loud feedback up out fo the mic. Nothing I did would filter it out. that was the worst thing. the next was voice quality it was garbage. I bought an MB-800 from Amazon a while back and it plugged in adjust a bit of volume to boost my transmit a bit. and boom it instantly worked. paid about the same this is worth. I cant in my right mind accept the quality of this mic.