What’s 1.44 mm connector in this context? Common sizes for headphones are 2.5, 3.5 and (lately) 4.4 mm

Since you mentioned 4.4mm, thought I would chime in and mention pentaconn (the trade name) which is a TRRRS connection (which does include a ground connection as well as L+/L-/R+/R-. I still do not understand the purpose of the ground connection in these plugs since there's nothing to ground on the other end.

	▲	ansgri 24 minutes ago \| parent [-]
		Isn’t it the only common variant of 4.4mm? Since portable balanced audio is audiophile-adjacent, no wonder it includes the common ground of dubious utility.

▲

crote 3 hours ago | parent | prev [-]

Don't forget the classic 6.35mm jack!