The SS4R is a resistor based, automatic impedanced matching speaker selector used for connecting 4 pairs of speakers while maintaining a safe impedance load for your receiver. Each pair of speakers can be turned on or off independently in any combination without concern for amplifier loading.

-Connect and safely control multiple speaker pairs.

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The SS6R is a resistor based, automatic impedanced matching speaker selector used for connecting 6 pairs of speakers while maintaining a safe impedance load for your receiver.  Each pair of speakers can be turned on or off independently in any combination without concern for amplifier loading.

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