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A PA system, or Public Address System, doesn’t have a specific voltage as it’s not a single piece of equipment but a system comprising several components like a microphone, amplifier, and loudspeakers. The voltage can vary depending on the specific device and the power source. For instance, the input voltage for a PA system amplifier could be anywhere from 9V for small portable models to 220V for larger ones. Always check the manufacturer’s specifications for accurate information.