Silly Jack question

[jimbob]

Im sure this is a silly question, but do these 2 jacks represent the typical input and output jacks we use around here?

SWITCHCRAFT #11 ... 1/4" single, open (non-shorting). 


SWITCHCRAFT #12-a   1/4" tip shunt or shorting jack.

What's the difference between these 2 jacks?


1/4 in. NC Tip Switchcraft #12A
SKU: 0601
http://www.smallbearelec.com/Detail.bok?no=88

And

Jack, 1/4 in. Stereo Switchcraft #12B

http://www.smallbearelec.com/Detail.bok?no=89

[Ripthorn]

I don't know if this answers your question, but 12A shunts (grounds) the tip when a plug isn't inserted.  The 12B is typical of what we use for input jacks.  A mono jack is typical of output.