I just got Phonak Bolero hearing aides. Using the little ring that goes in your ear - not closed mold. It allows regular sound as well. My hearing is fine below 4 khz. Curious to see how music sounds. They told me hearing aides don't do anything above 8 khz. So I guess I still won't hear those crickets on Beatles Sun King intro. Aren't they ~ 12 khz? Anyone else use these?