And I don't think I'd use a telephone set here. I don't see the headphone model so a wild guess (likely wrong) is this is needed.
trying to hook up turtlebeach headphones from xbox to 70" jvc model hd-70gc78. tried audio out port while switching a few audio options with no luck.
also going to get a wireless headphone set. anything special needed to make it work? or advice on which products to avoid/prefer?