Gold-Plated Groove. The Pearstone 3.5mm to 1/4" Screw-On Adapter allows you to connect headphones that have a screw-on 3.5mm plug into devices that have a 1/4" headphone jack. The adapter has a gold-plated construction to provide excellent signal transfer and to resist corrosion. The threaded 3.5mm adapter makes it ideal for use with headphones that use a threaded connection, like the RODE NTH-100, Sony MDR-7506, Senal SMH-1000, and more.