It can take anything slightly thicker then this. (left side, the right goes into the headphones) I did manage to shove the tip of one those cheapy headphones that they put with t-shirts (theyre actually not bad when compared to budget headphones BUT they leaked like no tmr) those are slightly thicker then this AKG plug & are ribbed. p.s this is the cable for the K450 & K480NC & any sudden tugging force if theyre in a recessed jack will break the tip.


















