bull crap, my mics are a totally new mic WITH mounts, thats for sure
if your unsure, i may be unloading my sambras soon when i get the shures i want, you will notice a diff
some ppl love my tapes before the mounts, if your in a position where the bass can be too much, it will be, and i usually hate the tapes others love of mine, because theyre too bass heavy, not too much bass, but bass heavy, focusing on nothing but baSS AND working around that
i think a huge diff is noticeable, def depending on playback too
but YMMV