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Thread: Why are headphones collected in business class before the flight lands?
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Old May 3, 2019 | 7:03 pm
  #17  
hazcaddy
10 Years on Site
 
Join Date: Dec 2010
Location: Glen Abbey
Posts: 639
Originally Posted by Nitehawk
I think that one of the 3 prongs probably provides power for the noise cancelling function.
Nah, I wore the 3-prongs on some SQ and BR flights last week and they did not do any noise reduction. What annoyed me was bringing along my QC15s with 2- and 1-prong plugs, then having nowhere to plug them in as the airlines were all 3-prong.
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