iFixit Headphone Jack for MacBook Pro 15" Retina (Mid 2018-2019) and 16" iFixit& more Go to product viewer dialog for this item.
A budget-friendly option found at Walmart for around for a 12ft version. Vention 3.5mm Aux Cable Vention& more Go to product viewer dialog for this item. where to buy 3.5 mm jack
A female chassis-mount jack for DIY amplifier projects, sold by Parts Express for . iFixit Headphone Jack for MacBook Pro 15" Retina