I have a hearing aid (from
hearing aid store) for my right ear only (irreversible nerve damage caused by fevers as a toddler). I tried mixing with the aid in and it didn't help at all. I've played gigs with it in as well, doesn't really help. The only reason I got it was to hear music more accurately, so it was a little bit of a letdown. So now it's just a tool I use during my day job for important meetings.