Not sure on that, but my guess is no. I have personal earplugs that I wear to bed every night (I sleep in a noisy area) and I found the earplugs they gave me at the testing center to be perfectly fine. They were of the disposable type so you can study with similar ones if you are worried about the difference.

I asked them last time and they told me "NO YOU CAN'T." However, I used something like headphons and it was good idea, as their blugs don't work with me "my ears are big LOL!"

try thier headphones, you won't hear anything even if a train pass beside you.

In my opinion you should try their earplugs they are also good and no test center allow to take personal earplugs.