Headphone Adapter 3.5mm to 4.4mm by iFi audio - Convert your 3.5mm single-ended headphones to work with a 4.4mm Balanced output.
3.5 mm – 2 x 3.5 mm - Biltema.fi
3.5mm to Double 6.5mm TRS Cable AUX Male Mono 6.5 Jack to Stereo 3.5 J
3.5mm Stereo Plug to 3.5mm Stereo Jack - #23-137-006 - YouTube
RS PRO Male 3.5mm Stereo Jack to Female 3.5mm Stereo Jack Aux Cable, Black, 3m | RS
3.5mm Stereo Audio Jatkokaapeli - Uros - Naaras - 3m - Musta
Amazon.com: Amazon Basics 3.5 mm Male to Male Stereo Audio Aux Cable, 4 Feet, 1.2 Meters : Electronics
StarTech.com Stereo jakokaapeli 3,5 mm | Edullinen
Right-Angle 3.5mm Stereo Plug to Pigtail Cable : ID 1700 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: UGREEN 3.5mm Audio Cable Braided 4-Pole Hi-Fi Stereo TRRS Jack Shielded Male to Male AUX Cord Compatible with iPad, Samsung Phones, Tablets, Car Home Stereos, Headphones, Speaker, 3FT : Electronics