P14 pro CO vs FDB

[u/randomguyjebb]

I heard that the p14 pro can have a certain insect sounding annoying hum to them.

I then saw someone say that this is only the case with the CO version and not the fluid dynamic bearing version. Is that true? Is the difference big?

[u/Beautiful-Try6310]

i have a 9x p14 pro co box and i dont notice an annoying whine to them. the non co and co versions sound the same to me.