Yup. That transmitter thing you mention is exactly what I ended up with back in around 1973. The wire behind my hair at the back of my head. I waited for my hair to grow long enough to cover it up. It did help. Those devices are all wireless BlueTooth devices now. In all my work and social life I have tried very hard to gently explain my unique needs to others. Most people are helpful; some are not. We are dealing with an invisible disability so people forget. Educating others and advocating for ourselves without being nasty about it is the way to go. You are very fortunate to have one 'good ear'. 🙂