The Threaded Bands On Audio Jacks. The deep ridges or threads on audio-jacks aren’t just there for a tighter fit when plugged in. These bands are made of an insulating material used to protect the wires while the sound is being transmitted. Additionally, the number of bands indicates which end goes where. Three bands equate to one band per left and right ear, and the third band for grounding, and should be plugged into the stereo or amplifier, while 2 bands indicate the end that plugs into a device.
It's correct though, I can remember all the publicity when they were first introduced.
So if I try to save your life, but you see that it will make you uncomfortable, can I assume you will pass on the help?
Yes, had me totally confused .