Connecting Multiple Wireless Headsets

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Hey Everyone,

I am new here but joined because I can't seem to find the answer to this question on my own.

I am interested to know if there is any device that can connect wirelessly with multiple sets (10 or so) of wireless headphones so audio can be transmitted to an individual headphone, all of the headphones, or groups of headphones.

Would this be done through Bluetooth, radiofrequency, or what? What would the range be for different ways to do this (needs to be 100 or more yards)? They must have something like this for NFL teams who talk with the quarterbacks, coaches, etc.

Any help would be appreciated. I am not electronically inclined, so feel free to speak to me as if I know nothing...

I appreciate any help!
 
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