Beyerdynamic Screwable Headphone Adapter, 1/8" (3.5mm) to 1/4" (6.35mm)

Beyerdynamic Screwable Headphone Adapter is compatible with DJX1, DT250, DT290, DT291, DT294, DT297, DT331, DT431, DT440, DT440Edition, DT531, DT660, DT660Edition, DT770, DT770alt, DT770Edition, DT770M, DT770PRO, DT770PROHT, DT831, DT860, DT860Edition, DT880, DT880alt, DT880Edition, DT931, DT990, DT990Edition, DT990PRO, DTX700, DTX800, DTX900 Headphones.