ChromaCast CC-STPA-14F35M 1/4-Inch Female Stereo Plug to 3.5mm Male Stereo Jack Adapter 1/4" stereo plug to 3.5mm stereo jack. Allows you to connect 1/4 Inch stereo plug to a 3.55mm stereo jack. Easy to use and provides better sound quality with a good clarity while listening to music.