Dynalink Speaker switch 2 way 2 zone multi stereo speaker selector control box 9321758127919 | eBay
Bytecc 61050 2 or 4 Way Speaker Switch, Stereo Speaker Selector — EIO.com
Xtrempro 2 Way Switch 1-in-2 Out Way Pair Stereo Speaker Selector with Volume Control Metal Non-Slip Box - Black - Walmart.com
Amazon.com: TENEALAY 2-Way Audio Stereo Speaker selector Switcher Box, Combiner Multi Zone A B Speaker Switch Distribution Controller Box - P21 : Electronics