I've owned Apple AirPod Pro's for about a year now. I primarily use them for work conference calls (3 - 4 hours every day). I also listen to music sometimes (classical or movie soundtracks), but not at high levels. About a month ago, I developed tinnitus in both ears. I have a very high pitch ringing sound in my right ear, which varies in intensity and a lower pitch varied ringing in both my ears. I've been to my primary care provider, an ENT and had my hearing tested. My ears and hearing are perfectly normal, except for the tinnitus. At its worst, I couldn't sleep for four days. It was horrible. So I stopped using the AirPod Pro's all together for several weeks and my tinnitus significantly improved, but it hasn't gone away entirely. In particular, the varied ringing I hear in both ears almost completely went away (it drastically reduced in volume) and the very high pitch ring in my right ear seemed to come and go. I had days where it was gone entirely. With things improving, I recently started using the AirPod Pro's again for work conference calls (2 - 3 hours per day). My tinnitus is now back again, just as it originally started. I'm not looking for medical advice, but I wanted to share my experience since others are having similar issues. For me, it's not hearing loss induced tinnitus since my hearing is perfectly normal. In my opinion, there does seem to be a correlation between wearing the AirPod Pro's and increased tinnitus symptoms. Since everything has been checked out by doctors and audiologists, I do think the AirPods Pro's either caused or majorly contributed to the ringing I'm currently experiencing in my ears. I do think perhaps it's something with their ANC technology. I love Apple products, but I won't be wearing the AirPod Pro's anymore. I do hope at some point Apple addresses this issue since there are a number of people reporting same or similar problems. For those suffering from tinnitus, there are some great tracks on YouTube that really help mask the ringing sound. I'm happy to share the ones that I've found helpful. Best of luck!