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Isn’t USB power too noisy to supply the sensitive audio circuitry of a headphone amplifier?

April 26, 2017amplifier audio circuitry HEADPHONE isn’t power sensitive supply USB

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Isn’t USB power too noisy to supply the sensitive audio circuitry of a headphone amplifier?

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The audio circuitry in a Leckerton USB amp does not use the USB 5V supply directly. High-frequency switching regulators provide a means of isolating sensitive circuitry from noise which might be on the USB power.