What I've heard people (who know much more than me) say: Hearing aids amplify ALL sounds and in some spaces that is counter-productive - causing distortion, reverberation and overall, a lack of clarity for the sounds that you DO really want to hear. Some hearing aid manufacturers offer "apps" that offer options via your phone and these may help - letting you control the "direction" of the hearing aids. The hearing loop solution discussed here isolates the audio signal produced by a PA system, or local microphone, from all background noises and pipes it directly to the telecoil in a hearing aid, implant or loop listening device. The local microphone could be a "boundary mic" or a few of them, placed on a table used by a group such as the book club, that links to the loop system. I hope this helps but if not, please let me know.