The SSVC-6.1 Speaker Selector is a resistor-based; impedance matching speaker selector used for connecting up to six pairs of 4-ohm or 8-ohm speakers; while maintaining a safe impedance load for your amplifier or receiver. Each pair of speakers can be independently turned on or off using push buttons on the front panel; with no need for worrying about amplifier loading. Each zone features an independent volume control. Features: Connect and safely control multiple speaker pairs with a single amplifier Automatic impedance protection circuitry 100 watts/channel continuous power handling capacity; 200 watts/channel peak 4.6-ohm minimum amplifier impedance with four 4-ohm speakers selected; 5.3-ohm minimum with 8-ohm speakers Individual zone on/off buttons and volume controls Heavy-duty screw-type connectors supporting 12-18 AWG speaker wire Isolated left/right circuit grounds provide safe connection for amplifiers with floating grounds or bridged configuration Accurate; noise-free switching Support Files: Quick Install Guide (Jul 3; 2019) Updated Jul 3; 2019