Audio sounds bad in Premiere Pro, but sounds good in Audition and exported to MP4

I know, its an old question; but this issue bothered my (along with many others) for a while but I now know where it is coming from: 

If you have: 

clips, that have fine audio outside of pp

but choppy, distorted, even gated sound inside the timeline

but then again fine sound once the clip is published your issue is most likely connected to some compressed bluetooth device (like a headset) being in the way.

the fix for this is:

go to settings -> audio and then just set the input audio to none. 

yes, INPUT. 

this is somehow interefering with the output and will immediatley solve your issues.

Try Preferences > Audio Hardware and set Input to None.

Delete the Media Cache and Media Cache files:
https://community.adobe.com/t5/premiere-pro/faq-how-to-clean-delete-or-trash-media-cache-files/td-p/....

If that doesn't work,try resetting the preferences:
https://community.adobe.com/t5/premiere-pro/faq-how-to-reset-trash-preferences-in-premiere-pro/td-p/8236158?page=1

If that doesn't work, try resetting the Workspaces:
Reset a workspace
Reset the current workspace to return to its original, saved layout of panels.
1. Do one of the following:
• Click the Workspace menu icon and select Reset to Saved Layout.
• Choose Window > Workspace > Reset to Saved Layout.
from here:
https://helpx.adobe.com/premiere-pro/using/workspaces.html

If that doesn't work, try creating a new project and import the old one into it.