Tinmania t1_j6jg4e9 wrote

The 3.5 mm earphone jack is far older than 1979. It was popularized by transistor radios in the 1950s. But it was mono not stereo. When they designed stereo airplane audio there wasn’t a 3.5 mm stereo standard yet. So they simply used two mono 3.5 mm earphone jacks for stereo headsets. Not much different than what they did with the air driven airplane headsets.


Tinmania t1_iu2sd24 wrote

OMG, I never knew this even existed and yet I knew I instantly wanted to inhale it. Yeah, I’ve had too many dry lasagnas in my life.