I assume you are asking because often switch mode power supplies are used in car audio applications running off a 12V battery. There is no reason a switch mode supply running off mains cannot be used to power a 200W amp provided the power supply is designed to provide the required voltage and current.
edit: not being experienced in such things I would add the caveat that noise might need to be considered and would probably be more or less of an issue depending on the PSRR of the particular amp.
Tony.
edit: not being experienced in such things I would add the caveat that noise might need to be considered and would probably be more or less of an issue depending on the PSRR of the particular amp.
Tony.
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pyramid 12v power supply | eBay
I recommend buying twice the number of watts the amplifier is rated at.
I recommend buying twice the number of watts the amplifier is rated at.
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