I have has a "small" amount of hearing loss on the AN side, but I already wear a hearing aid so that took care of it. I have had some balance issues but not enough to keep me down. I just have to be careful when I first stand up. And the last thing is that I have had some increased tinnitus. I had tinnitus before the Cyberknife but it is up just a slight bit.
I have to say that of course each person has a different response, I have seen some post that the writer says they have had no side effects, and some that have had worse than I describe.
Again good luck with the decision. I am glad I did cyberknife and would do it again if needed.