3.5mm Headphones Adapter Converter for Audio-Technica ATH-M40X M50X M60X M70X
Also used for Sennheiser- HD518 HD558 HD595 HD598se HD569 HD579 HD599 and other headphones. 3.5mm female to 2.5mm male Headphone Adapter Jack Plug Converter for Audio-Technica ATH-M40X ATH-M50X ATH-M60X ATH-M70X.