Tripp Lite P316-06N 6" 3.5mm Mini Stereo to Two RCA Audio Y Splitter Adapter Cable (3.5mm F to 2x RCA M) - Newegg.com
Digital Audio Splitter | Male Male Audio Cable | Stereo Splitter Cable - Audio & Video Cables - Aliexpress
Amazon.com: TNP 3.5mm to RCA Audio Cable (30 Feet) Bi-Directional Male to Male Nickel Plated Connector AUX Auxiliary Headphone Jack Plug Y Adapter Splitter Converter to Left/Right Stereo 2RCA Wire Cord :