3.5mm 4 Pole Jack Y Splitter-Plug To 2x3.5mm 3 Pole Sockets Cable Adapter
RCA Plug to 2xRCA Jack Adapter - Y-Adapter
2ft 12/3 STW Twist-to-Lock "Y" Adapter — Prime Wire & Cable Inc.
5-WAY SPLITTER Y ADAPTER 2 PIN WP STYLE CONNECTOR
Amazon.com: Antlion Audio 3.5mm Y Adapter - Headphone/Microphone Adapter for Devices with Single Audio Jack (Gaming Consoles, Controllers, PCs, Tablets and More)
Avaya Y-Adapter for PoE Injector (700511777, 700511397)
Double Headset Y Adapter - MyPilotStore.com
JL Audio Marine Y-adapter Cables 18" long (1 female RCA to 2 male RCA) at Crutchfield