The 3.5mm TRS to 1/4" TRS Headphone Adapter from Hosa is designed to adapt
a 1/8" (3.5mm) mini-stereo phone plug to a stereo 1/4" (6.3mm) phone jack. It is
suitable for connecting headphones to pro-audio equipment.
Compatible with 1/8" (3.5 mm) headphones
Connector 1 1/8" (3.5 mm) female mini-stereo TRS
Connector 2 1/4" (6.3 mm) male TRS phone plug