I recently bought the 75t. I noticed the noise on the left earpiece immediately and sent the parts back, thinking nothing more of it. But when the new 75t arrived and the noise was still there, I didn't know what to do. I'll contact support soon and tell them about the problem.
Hi all, found a simple way to "suppress" the noise in the left earbud:
-> Keep the basic volume of the Earbuds as low as possible, therefore set the volume on the smartphone itself to 100%. In this way, the noise disappears (in my case) or it becomes so quiet that it can no longer be perceived.
Try it out and give feedback if this way also worked for you... :-)
Best regards Nik
P.S. I have the Jabra Elite 85t, but I think it's the same problem as with the 75t.