Originally Posted by ann61
Oh. I think I understand. That would be like the phone with outside sound muted and the phone with outside sound activated?
for FM only, I use it in either on-on one speech situations or music on the computer or iPod. The FM with mic is used in bigger rooms when the speaker id farther away, then you put the FM transmitter near the speaker. You will also have the microphones activated on your aids so you can hear the people speaking to the speaker.