Amazon.com: Audio Switch Bi-Directional 4-Way RCA L/R Stereo Audio Selector Headphone Switcher Stereo Audio Selector Box Audio Splitter Volume Adjustable(4 in 1 Out /1 in 4 Out Audio) : Electronics
3.5mm Stereo Audio Switcher Bi-directional Stereo 2way Audio Switch Splitter Box 2 In 1 Out /1 In 2 Out Adapter With Mute Button - Audio & Video Cables - AliExpress
3 Port Way 2 RCA PHONO Audio Switch Box In/Out Manual Stereo Selector Splitter | eBay
DCENTA LINEPAUDIO Audio Switcher 3.5mm 2 in 1 Out / 1 in 2 Out A/B Switch Stereo Audio Splitter Box with No Distortion 3.5mm Jack for Switching Between Computer Speakers and Headphones - Walmart.com
Sescom 3.5mm Stereo Audio A/B Switch for Mobile SES-AB-SWITCH