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My IR cans already are powered by a battery, it's not too difficult to wear them, they're light and I've worn them for years, Sony

They have a battery compartment built in so I'm thinking about piggy-backing an active TIR IR LED in there, the headphones even have an LED to show they're active...

Just to allay fears that I've seen about wearing bulky headsets with heavy batteries - and IR/RF headphones solve the wires problem too, which will make you quids-in with your partner

Ming

Hello:

I think this is a great idea, and fully support it. You usually need about 3V to get an IR LED to light up. Remember to put a resistor in series to limit the current the LED will draw. Should last for a long time.

Let us know how it goes.