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Whats the difference between a single and a dual source speaker selector?

April 26, 2017dual Selector source speaker

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Whats the difference between a single and a dual source speaker selector?

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A single source selector (ISM models) accepts input from one audio source (receiver/amplifier) and distributes audio output to a number of zones or speakers. However, a dual source selector (DSSM, VSS models) accepts inputs from two separate amplifiers/receivers and allows the user to select the program from one of the two sources for each zone output. With dual source selectors, the audio programs from both amplifiers cannot be selected at the same time for any zone output. The user can select Source A or Source B for each zone. This will allow program A to be active in one room and program B in another.