[Elecraft] Headphone Jack ???

[Frank Van Cleef W1WCG]

A question for Elecraft, when y'all have time ;<)) :

It's a little bit of a guess looking at the picture, but the phone jack on 
the front panel appears to be a 1/4" type rather than the 1/8" size found on 
the K2, while the jack on the rear panel appears to be a 1/8" jack.  Is this 
the case?

If so, the 1/4" jack in the front is a good choice, bearing in mind the 
problems at least some folks have had with the smaller jack in the K2.  Was 
any thought given to the specs of these jacks to try to avoid such problems 
??

TIA,

Van W1WCG
K2 2634, 5510
K3 ???