The Mackie PF-100 is an on-mic pop screen for the EleMent Series microphones. The PF-100 is a no-brainer for recording or streaming dialogue, singing, and any other vocal activities. Just slide it over your mic and instantly reduce those nasty pops that sentences like the one above make happen. This keeps your audio much more even and consistent as well as protects your mic from all that saliva. Perfect for the EM-91C microphone.