Difference between these?

http://www.switchcraft.com/productsummary.aspx?Parent=423

The first one is a normal one… the second one is a switched one… there is an extra terminal on the jack for putting the jack ‘inside’ a circuit . You can use it to break a signal somewhere halfway by inserting a jack. (I hope i make myself clear)… what do you wan’t to use it for?

If you’re planning on using it for Anushri, panel mounted jacks will not fit. I tried and there is not enough room between the holes.

Thanks. As when I link to mouser with the numbers they both come up as switched.

@qp No its for a MC202 I’m modding.