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Hi-Fi Power Supply
Question: Do I need two power supplies if I connect the Zones 1 & 8 variable outputs to a powered amplifier?

Answer: Not necessarily.  The power supply that comes with the initial Hi-Fi controller can control up to 4 zones.  When a 5th or more ZAC (Zone Audio Control) card is added, then a 2nd power supply is required.  As an example, if ZAC’s were installed to Zones 1, 2, 3, and 8, only one power supply would be required – if ZAC’s were installed to Zones 1, 2, 3, 4, and 8, two power supplies would be required.
Article ID: 719