Monoprice 3.5mm Stereo Plug to 6.35mm (1/4 Inch) Stereo Jack Adaptor - Gold Plated Save when you buy the 3 pack! 3. 5mm Stereo Plug (male) to 6. 35mm (1/4 Inch) Stereo Jack (female) Adaptor - Gold Plated 3. 5mm Stereo Plug (male) to 6. 35mm (1/4 Inch) Stereo Jack (female) Adaptor