Amazon.com: TENEALAY 4-Way 3.5mm Stereo Audio Switch Input Signal Source Switcher Selector Splitter Box with line Volume Controller (4 in 1 Out / 1 in 4 Out) -MC41 : Electronics
4 Port Audio Switch, 3.5mm Audio Switcher, Stereo AUX Audio Selector, 4 Inp W9A5 | eBay
Premium 4-Port Digital Optical Audio Switch With Remote�
Shop | StarTech.com 4 Port Black USB KVM Switch Kit with Cables and Audio - desktop KVM Switch - VGA KVM Switch - USB KVM Switch 4 Port (SV411KUSB) - KVM /