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
IOGEAR - GCS1944H - 4-Port 4K Dual View KVMP Switch with HDMI Connection, USB 3.0 Hub, and Audio (TAA)
1 2 Audio Switcher | 2 Port Video Audio Switch | 1 4 Audio Switch - 4 Port Audio Switch - Aliexpress