Selector for switching audio devices with Canon (XLR) connectors.Can be used to switch the output of balance signal cable.The main parts are made with the best from Japan.XLR Connector: Gold Plated Terminals, Wiring Material: Gold Plated OFC Wiring Material, Switch: Made in Japan (All Non-Magnetic Materials) Case: Aluminum Front Panel + 0.06 inch (1.6 mm) Thick Chassis Knob: Large 1.6 inch (40 mm) Diameter Aluminum Sharpening.