ITEM NAME:Audio aux 6.35mm 1/4" female to 3.5mm 1/8" male stereo headphone adapter cable Z a.imagelink a:hover.imagelink {color:#db3606;.Have a hi-fi with the small headphone socket and need it changing in to the standard larger 1/4" (6.35mm) Female jack?. Ideal when you need to adapt a 6.35mm (1/4in) headphone stereo plug to connect to a 3.5mm stereo jack for sound cards, MP3 players, portable CD players, etc.