I don’t know if your hearing aids are working correctly but for me bluetooth streaming to the KS10 sounds poor initially, lots and lots of noise. I almost always stream to them when I’m outside so it’s lots of ambient noise being jacked up for some reason. I’ve found that If I go into the app and click the equalizer icon (lower right corner) instead of the equalizer and noise adjustent settings there is a single setting you can change called cross-fader. Sliding to the left is just microphones on and streaming volume is nil. All the way to the right is all streaming, microphone is off. I slide it just a tiny bit, the least I can, to the right and the immense amount of noise goes away and streaming is really good. The microphones are still on, I can still hear things around me but it’s like the noise reduction turns on the moment you touch that button. I feel like there is a glitch where the default (for my hearing aids) has the mic up way too high or noise reduction all the way off (ether way) with the result that the background news completely crushes the streaming audio and even a tiny tweak somehow makes it correct that.
Maybe you could try that slider out and see if it helps at all.