I have been wondering for some time now : I am using (cheap) headphones to listen to music on my smartphone, and they work fine. But when I plug them in any computer, it seems like it cuts off low frequencies. So far I wasn't that much puzzled, until I pressed the play/pause button on the headphone's cable : I get the original audio coming through fully, as long as I keep it pressed...
How is it possible, and how come different female jack connectors can make headphones work differently ?