I'd read about tinnitus being a very commonly reported post-covid symptom late last year. It was quite worrying!
I got infected this January, and I thankfully escaped lightly without much suffering or after effects, save bouts of tiredness that lingered for about 2 months after, and a (still) slightly elevated heart rate when I begin physical activity.
The weirdest effect Covid had on my listening (particularly while I was still infected) was that I kept getting intense frissons while listening to music, and was having a particularly intense emotional reaction to most of my favourites (and to new music I discovered). This intensity lingered for quite a while, and I don't know if I'm imagining it, but I think I appreciate and enjoy music far more post-infection. This also turned out to be quite expensive for me post infection (in terms of upgrades and acquisitions).