Amazon.com: KabelDirekt – 3.5mm Y Adapter & Jack & AUX Splitter (1×3.5mm Male to 2×3.5mm Female, Connect Two Sets of Headphones to a Smartphone/Tablet/Notebook, Stereo, 4in, Black) : Electronics
Voodoo Lab 2.1mm Output Splitter Adapter Cable - Dual Straight to Straight - 4 inch | Sweetwater
Tripp Lite 2-to-1 RJ45 Splitter Adapter Cable, 10/100 Ethernet Cat5/Cat5e (M/2xF), 6 in. - network splitter - 6 in - - N035-001 - Cat 5 Cables - CDW.com
Headset Adapter, 3.5mm Jack Headphone Splitter CTIA Headphone Adapter Mic and Audio Cable with Separate Microphone and Headphone Connector for Gaming Headset to PC - 8inch/20CM Black - Walmart.com
Vention 3.5mm Splitter 2 Male 1 Male - Audio Splitter Headphone Adapter 3.5mm Aux - Aliexpress
Sound Professionals SP-QUAD-ADAPTER - 4 way audio splitter SP-QUAD-ADAPTER
Amazon.com: ENVEL Headset Adapter Y Splitter 3.5mm Jack Cable with Separate Mic and Audio Headphone Connector Mutual Convertors for Gaming Headset, PS4, Xbox One, Notebook, Mobile Phone and Tablet 30CM/12 Inch :