Amazon.com: 4 Input 4 Output 3.5mm Audio Switch Box, AUX Switcher, Stereo Audio Selector Box, Line Router Splitter Combiner for Home Audio : Electronics
Amazon.com: 3.5mm Audio Switch with line Volume Controller, 3 in 1 Out 1/8" aux switcher Splitter selector Box, Mini Inline Headphone attenuator Volume Control knob -MC31 : Electronics
Amazon.com: Professional 4-Way RCA Phono Line Level Stereo Audio Switcher Selector with 2 Selectable Outputs : Electronics
Stereo Audio Switch Audio Switcher 4 Input 1 Output /1 Input 4 out Audio Sharing Active Speakers and Headphones - Walmart.com
Amazon.com: 3.5mm Audio Switch with line Volume Controller, 3 in 1 Out 1/8" aux switcher Splitter selector Box, Mini Inline Headphone attenuator Volume Control knob -MC31 : Electronics