Not sure if you are interested in changing brands but I got the Costco KS8.0 a few weeks ago, which I am liking. The Bluetooth phone device, the Smart Mic, is also a microphone device, and it is loud. I have tried with my wife talking and also with a TV. Another thing about the KS8.0 hearing aids themselves is you can adjust the microphone pattern, and it is represented in the app like a cone of sound. It reduces sound that is outside the cone you have set. It really works. There are other options. There is a listening environment called Group Conversation, or you can set the microphone pattern to 360 so it does not reduce sound based on where it is coming from. Different options for different situations.
StreamLine Mic for Signia hearing aids
With StreamLine Mic Signia hearing aids become a hands-free mobile headset and wireless headphones that stream premium stereo quality from any Bluetooth device – mobile phones, PCs and laptops.