Amazon.com: XtremPro 2 Way Speaker Switch, 1 in 2 Out Way Pair Stereo Speaker Selector W/Volume Control Metal Non-Slip Box - Black (61052), 9.0 x 3.25 x 1.5 : Electronics
2 WAY SPEAKER SWITCH BOX AUDIO SPLITTER SELECTOR FOR 2 PAIRS OF AMP SPEAKER | eBay
2 Way Audio Speaker Switcher , 2 Zone Speaker Selector Switch Box, Stereo Distribution Box for Multi-Channel SOLUPEAK SP2 - AliExpress