Helios Speaker Selector (4 Zones) in the Audio Connectors department at Lowes.com
4ZONE 2AMP Speaker Selector Switch Switcher w Volume Control & Gold Plated Jacks 792273331843 | eBay
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
Trekwood RV Parts - Voltage / 2016 / Electrical / Switch / Switch - Plate - Dual Speaker Selector
Amazon.com: Pyle 6 Channel Speaker Selector Switch - Multi Zone A B Speaker Distribution Controller Box w/ Independent Audio Source Volume Control, Supports Home Theater Stereo Receiver System - Pyle PSLSW6 : Electronics
Audtek SSW-4 Speaker Selector Switch Impedance Matching 1 In 4 Out
Pajuva AVX-1600 4 Zone Stereo Speaker Selector Switch with Impedance Protection by AVX Audio