Hello Aexar,
Thank you for using Apple Support Communities.
We understand that you are getting a loud static noise from your Apple Earbuds after updating your iPad to iPadOS 14.
First, do you have another headset or Earbuds that you can test with your iPad? If the issue occurs with a different headset or Earbuds, then if we could get you to update iPadOS on your iPad, the latest version as of today is iPadOS 14.0.1.
Update your iPhone, iPad, or iPod touch - Apple Support
If the issue continues, then take a look at the following support article to troubleshoot further:
If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker - Apple Support
If you are still hearing the static after this, then you will want to contact Apple Support for additional assistance for the issue.
Best regards.