Quote:
Originally Posted by ClieOS 
There are several kinds of 3.5mm mini jack. The width of 3.5mm refers only to the diameter of the jack (and of course the socket intake), but does not specify how many conductors on each jack.
Here are a few common variation of 3.5mm mini jack found on headphone: 
From the left: two conductors (mono), three (stereo), four (extra conductor for mic + remote).
As you can see, they all share almost the same physical shape and thus all of them can be used with with 3.5mm socket. This is why all of them are referred as 3.5mm mini jack.
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But does {┏━} / {┃} style refer to the actual shape of these jacks?
I see ADDIEM listed as ┏━ style, but the picture shows a straight connector.
NE-7M's connector appears to be angled in the picture, but the descriptioin says it's a ┃style.....
Thanks again for the reviews and explanations.
(I am glad that 3.5mm has stood the test of time. Even several cellphone makers (Nokia, HTC) are seeing the errors of their ways and coming back to 3.5mm.)